28251720

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:165

約数の個数: 256

約数和(自身を含む): 111628800

約数和(自身を除く): 83377080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 37, 40, 42, 45, 54, 56, 60, 63, 70, 72, 74, 84, 90, 101, 105, 108, 111, 120, 126, 135, 140, 148, 168, 180, 185, 189, 202, 210, 216, 222, 252, 259, 270, 280, 296, 303, 315, 333, 360, 370, 378, 404, 420, 444, 504, 505, 518, 540, 555, 606, 630, 666, 707, 740, 756, 777, 808, 840, 888, 909, 945, 999, 1010, 1036, 1080, 1110, 1212, 1260, 1295, 1332, 1414, 1480, 1512, 1515, 1554, 1665, 1818, 1890, 1998, 2020, 2072, 2121, 2220, 2331, 2424, 2520, 2590, 2664, 2727, 2828, 3030, 3108, 3330, 3535, 3636, 3737, 3780, 3885, 3996, 4040, 4242, 4440, 4545, 4662, 4995, 5180, 5454, 5656, 6060, 6216, 6363, 6660, 6993, 7070, 7272, 7474, 7560, 7770, 7992, 8484, 9090, 9324, 9990, 10360, 10605, 10908, 11211, 11655, 12120, 12726, 13320, 13635, 13986, 14140, 14948, 15540, 16968, 18180, 18648, 18685, 19089, 19980, 21210, 21816, 22422, 23310, 25452, 26159, 27270, 27972, 28280, 29896, 31080, 31815, 33633, 34965, 36360, 37370, 38178, 39960, 42420, 44844, 46620, 50904, 52318, 54540, 55944, 56055, 63630, 67266, 69930, 74740, 76356, 78477, 84840, 89688, 93240, 95445, 100899, 104636, 109080, 112110, 127260, 130795, 134532, 139860, 149480, 152712, 156954, 168165, 190890, 201798, 209272, 224220, 235431, 254520, 261590, 269064, 279720, 313908, 336330, 381780, 392385, 403596, 448440, 470862, 504495, 523180, 627816, 672660, 706293, 763560, 784770, 807192, 941724, 1008990, 1046360, 1177155, 1345320, 1412586, 1569540, 1883448, 2017980, 2354310, 2825172, 3139080, 3531465, 4035960, 4708620, 5650344, 7062930, 9417240, 14125860, 28251720]

約数ペア:

[(1, 28251720), (2, 14125860), (3, 9417240), (4, 7062930), (5, 5650344), (6, 4708620), (7, 4035960), (8, 3531465), (9, 3139080), (10, 2825172), (12, 2354310), (14, 2017980), (15, 1883448), (18, 1569540), (20, 1412586), (21, 1345320), (24, 1177155), (27, 1046360), (28, 1008990), (30, 941724), (35, 807192), (36, 784770), (37, 763560), (40, 706293), (42, 672660), (45, 627816), (54, 523180), (56, 504495), (60, 470862), (63, 448440), (70, 403596), (72, 392385), (74, 381780), (84, 336330), (90, 313908), (101, 279720), (105, 269064), (108, 261590), (111, 254520), (120, 235431), (126, 224220), (135, 209272), (140, 201798), (148, 190890), (168, 168165), (180, 156954), (185, 152712), (189, 149480), (202, 139860), (210, 134532), (216, 130795), (222, 127260), (252, 112110), (259, 109080), (270, 104636), (280, 100899), (296, 95445), (303, 93240), (315, 89688), (333, 84840), (360, 78477), (370, 76356), (378, 74740), (404, 69930), (420, 67266), (444, 63630), (504, 56055), (505, 55944), (518, 54540), (540, 52318), (555, 50904), (606, 46620), (630, 44844), (666, 42420), (707, 39960), (740, 38178), (756, 37370), (777, 36360), (808, 34965), (840, 33633), (888, 31815), (909, 31080), (945, 29896), (999, 28280), (1010, 27972), (1036, 27270), (1080, 26159), (1110, 25452), (1212, 23310), (1260, 22422), (1295, 21816), (1332, 21210), (1414, 19980), (1480, 19089), (1512, 18685), (1515, 18648), (1554, 18180), (1665, 16968), (1818, 15540), (1890, 14948), (1998, 14140), (2020, 13986), (2072, 13635), (2121, 13320), (2220, 12726), (2331, 12120), (2424, 11655), (2520, 11211), (2590, 10908), (2664, 10605), (2727, 10360), (2828, 9990), (3030, 9324), (3108, 9090), (3330, 8484), (3535, 7992), (3636, 7770), (3737, 7560), (3780, 7474), (3885, 7272), (3996, 7070), (4040, 6993), (4242, 6660), (4440, 6363), (4545, 6216), (4662, 6060), (4995, 5656), (5180, 5454)]