28611720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:172

約数の個数: 192

約数和(自身を含む): 101088000

約数和(自身を除く): 72476280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 47, 57, 60, 72, 76, 89, 90, 94, 95, 114, 120, 141, 152, 171, 178, 180, 188, 190, 228, 235, 267, 282, 285, 342, 356, 360, 376, 380, 423, 445, 456, 470, 534, 564, 570, 684, 705, 712, 760, 801, 846, 855, 890, 893, 940, 1068, 1128, 1140, 1335, 1368, 1410, 1602, 1691, 1692, 1710, 1780, 1786, 1880, 2115, 2136, 2280, 2670, 2679, 2820, 3204, 3382, 3384, 3420, 3560, 3572, 4005, 4183, 4230, 4465, 5073, 5340, 5358, 5640, 6408, 6764, 6840, 7144, 8010, 8037, 8366, 8455, 8460, 8930, 10146, 10680, 10716, 12549, 13395, 13528, 15219, 16020, 16074, 16732, 16910, 16920, 17860, 20292, 20915, 21432, 25098, 25365, 26790, 30438, 32040, 32148, 33464, 33820, 35720, 37647, 40185, 40584, 41830, 50196, 50730, 53580, 60876, 62745, 64296, 67640, 75294, 76095, 79477, 80370, 83660, 100392, 101460, 107160, 121752, 125490, 150588, 152190, 158954, 160740, 167320, 188235, 202920, 238431, 250980, 301176, 304380, 317908, 321480, 376470, 397385, 476862, 501960, 608760, 635816, 715293, 752940, 794770, 953724, 1192155, 1430586, 1505880, 1589540, 1907448, 2384310, 2861172, 3179080, 3576465, 4768620, 5722344, 7152930, 9537240, 14305860, 28611720]

約数ペア:

[(1, 28611720), (2, 14305860), (3, 9537240), (4, 7152930), (5, 5722344), (6, 4768620), (8, 3576465), (9, 3179080), (10, 2861172), (12, 2384310), (15, 1907448), (18, 1589540), (19, 1505880), (20, 1430586), (24, 1192155), (30, 953724), (36, 794770), (38, 752940), (40, 715293), (45, 635816), (47, 608760), (57, 501960), (60, 476862), (72, 397385), (76, 376470), (89, 321480), (90, 317908), (94, 304380), (95, 301176), (114, 250980), (120, 238431), (141, 202920), (152, 188235), (171, 167320), (178, 160740), (180, 158954), (188, 152190), (190, 150588), (228, 125490), (235, 121752), (267, 107160), (282, 101460), (285, 100392), (342, 83660), (356, 80370), (360, 79477), (376, 76095), (380, 75294), (423, 67640), (445, 64296), (456, 62745), (470, 60876), (534, 53580), (564, 50730), (570, 50196), (684, 41830), (705, 40584), (712, 40185), (760, 37647), (801, 35720), (846, 33820), (855, 33464), (890, 32148), (893, 32040), (940, 30438), (1068, 26790), (1128, 25365), (1140, 25098), (1335, 21432), (1368, 20915), (1410, 20292), (1602, 17860), (1691, 16920), (1692, 16910), (1710, 16732), (1780, 16074), (1786, 16020), (1880, 15219), (2115, 13528), (2136, 13395), (2280, 12549), (2670, 10716), (2679, 10680), (2820, 10146), (3204, 8930), (3382, 8460), (3384, 8455), (3420, 8366), (3560, 8037), (3572, 8010), (4005, 7144), (4183, 6840), (4230, 6764), (4465, 6408), (5073, 5640), (5340, 5358)]