1279564520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{1289}}^1$

素因数の和:1419

約数の個数: 128

約数和(自身を含む): 3276806400

約数和(自身を除く): 1997241880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 83, 92, 104, 115, 130, 166, 184, 230, 260, 299, 332, 415, 460, 520, 598, 664, 830, 920, 1079, 1196, 1289, 1495, 1660, 1909, 2158, 2392, 2578, 2990, 3320, 3818, 4316, 5156, 5395, 5980, 6445, 7636, 8632, 9545, 10312, 10790, 11960, 12890, 15272, 16757, 19090, 21580, 24817, 25780, 29647, 33514, 38180, 43160, 49634, 51560, 59294, 67028, 76360, 83785, 99268, 106987, 118588, 124085, 134056, 148235, 167570, 198536, 213974, 237176, 248170, 296470, 335140, 385411, 427948, 496340, 534935, 592940, 670280, 770822, 855896, 992680, 1069870, 1185880, 1390831, 1541644, 1927055, 2139740, 2460701, 2781662, 3083288, 3854110, 4279480, 4921402, 5563324, 6954155, 7708220, 9842804, 11126648, 12303505, 13908310, 15416440, 19685608, 24607010, 27816620, 31989113, 49214020, 55633240, 63978226, 98428040, 127956452, 159945565, 255912904, 319891130, 639782260, 1279564520]

約数ペア:

[(1, 1279564520), (2, 639782260), (4, 319891130), (5, 255912904), (8, 159945565), (10, 127956452), (13, 98428040), (20, 63978226), (23, 55633240), (26, 49214020), (40, 31989113), (46, 27816620), (52, 24607010), (65, 19685608), (83, 15416440), (92, 13908310), (104, 12303505), (115, 11126648), (130, 9842804), (166, 7708220), (184, 6954155), (230, 5563324), (260, 4921402), (299, 4279480), (332, 3854110), (415, 3083288), (460, 2781662), (520, 2460701), (598, 2139740), (664, 1927055), (830, 1541644), (920, 1390831), (1079, 1185880), (1196, 1069870), (1289, 992680), (1495, 855896), (1660, 770822), (1909, 670280), (2158, 592940), (2392, 534935), (2578, 496340), (2990, 427948), (3320, 385411), (3818, 335140), (4316, 296470), (5156, 248170), (5395, 237176), (5980, 213974), (6445, 198536), (7636, 167570), (8632, 148235), (9545, 134056), (10312, 124085), (10790, 118588), (11960, 106987), (12890, 99268), (15272, 83785), (16757, 76360), (19090, 67028), (21580, 59294), (24817, 51560), (25780, 49634), (29647, 43160), (33514, 38180)]