81391860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:175

約数の個数: 216

約数和(自身を含む): 281467368

約数和(自身を除く): 200075508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 37, 44, 45, 55, 60, 66, 74, 90, 99, 101, 110, 111, 121, 132, 148, 165, 180, 185, 198, 202, 220, 222, 242, 303, 330, 333, 363, 370, 396, 404, 407, 444, 484, 495, 505, 555, 605, 606, 660, 666, 726, 740, 814, 909, 990, 1010, 1089, 1110, 1111, 1210, 1212, 1221, 1332, 1452, 1515, 1628, 1665, 1815, 1818, 1980, 2020, 2035, 2178, 2220, 2222, 2420, 2442, 3030, 3330, 3333, 3630, 3636, 3663, 3737, 4070, 4356, 4444, 4477, 4545, 4884, 5445, 5555, 6060, 6105, 6660, 6666, 7260, 7326, 7474, 8140, 8954, 9090, 9999, 10890, 11110, 11211, 12210, 12221, 13332, 13431, 14652, 14948, 16665, 17908, 18180, 18315, 18685, 19998, 21780, 22220, 22385, 22422, 24420, 24442, 26862, 33330, 33633, 36630, 36663, 37370, 39996, 40293, 41107, 44770, 44844, 48884, 49995, 53724, 56055, 61105, 66660, 67155, 67266, 73260, 73326, 74740, 80586, 82214, 89540, 99990, 109989, 112110, 122210, 123321, 134310, 134532, 146652, 161172, 164428, 168165, 183315, 199980, 201465, 205535, 219978, 224220, 244420, 246642, 268620, 336330, 366630, 369963, 402930, 411070, 439956, 452177, 493284, 549945, 616605, 672660, 733260, 739926, 805860, 822140, 904354, 1099890, 1233210, 1356531, 1479852, 1808708, 1849815, 2199780, 2260885, 2466420, 2713062, 3699630, 4069593, 4521770, 5426124, 6782655, 7399260, 8139186, 9043540, 13565310, 16278372, 20347965, 27130620, 40695930, 81391860]

約数ペア:

[(1, 81391860), (2, 40695930), (3, 27130620), (4, 20347965), (5, 16278372), (6, 13565310), (9, 9043540), (10, 8139186), (11, 7399260), (12, 6782655), (15, 5426124), (18, 4521770), (20, 4069593), (22, 3699630), (30, 2713062), (33, 2466420), (36, 2260885), (37, 2199780), (44, 1849815), (45, 1808708), (55, 1479852), (60, 1356531), (66, 1233210), (74, 1099890), (90, 904354), (99, 822140), (101, 805860), (110, 739926), (111, 733260), (121, 672660), (132, 616605), (148, 549945), (165, 493284), (180, 452177), (185, 439956), (198, 411070), (202, 402930), (220, 369963), (222, 366630), (242, 336330), (303, 268620), (330, 246642), (333, 244420), (363, 224220), (370, 219978), (396, 205535), (404, 201465), (407, 199980), (444, 183315), (484, 168165), (495, 164428), (505, 161172), (555, 146652), (605, 134532), (606, 134310), (660, 123321), (666, 122210), (726, 112110), (740, 109989), (814, 99990), (909, 89540), (990, 82214), (1010, 80586), (1089, 74740), (1110, 73326), (1111, 73260), (1210, 67266), (1212, 67155), (1221, 66660), (1332, 61105), (1452, 56055), (1515, 53724), (1628, 49995), (1665, 48884), (1815, 44844), (1818, 44770), (1980, 41107), (2020, 40293), (2035, 39996), (2178, 37370), (2220, 36663), (2222, 36630), (2420, 33633), (2442, 33330), (3030, 26862), (3330, 24442), (3333, 24420), (3630, 22422), (3636, 22385), (3663, 22220), (3737, 21780), (4070, 19998), (4356, 18685), (4444, 18315), (4477, 18180), (4545, 17908), (4884, 16665), (5445, 14948), (5555, 14652), (6060, 13431), (6105, 13332), (6660, 12221), (6666, 12210), (7260, 11211), (7326, 11110), (7474, 10890), (8140, 9999), (8954, 9090)]