80656940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{487}}^1$

素因数の和:536

約数の個数: 108

約数和(自身を含む): 213793776

約数和(自身を除く): 133136836

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 169, 182, 196, 245, 260, 338, 364, 455, 487, 490, 637, 676, 845, 910, 974, 980, 1183, 1274, 1690, 1820, 1948, 2366, 2435, 2548, 3185, 3380, 3409, 4732, 4870, 5915, 6331, 6370, 6818, 8281, 9740, 11830, 12662, 12740, 13636, 16562, 17045, 23660, 23863, 25324, 31655, 33124, 34090, 41405, 44317, 47726, 63310, 68180, 82303, 82810, 88634, 95452, 119315, 126620, 164606, 165620, 177268, 221585, 238630, 310219, 329212, 411515, 443170, 477260, 576121, 620438, 823030, 886340, 1152242, 1240876, 1551095, 1646060, 2304484, 2880605, 3102190, 4032847, 5761210, 6204380, 8065694, 11522420, 16131388, 20164235, 40328470, 80656940]

約数ペア:

[(1, 80656940), (2, 40328470), (4, 20164235), (5, 16131388), (7, 11522420), (10, 8065694), (13, 6204380), (14, 5761210), (20, 4032847), (26, 3102190), (28, 2880605), (35, 2304484), (49, 1646060), (52, 1551095), (65, 1240876), (70, 1152242), (91, 886340), (98, 823030), (130, 620438), (140, 576121), (169, 477260), (182, 443170), (196, 411515), (245, 329212), (260, 310219), (338, 238630), (364, 221585), (455, 177268), (487, 165620), (490, 164606), (637, 126620), (676, 119315), (845, 95452), (910, 88634), (974, 82810), (980, 82303), (1183, 68180), (1274, 63310), (1690, 47726), (1820, 44317), (1948, 41405), (2366, 34090), (2435, 33124), (2548, 31655), (3185, 25324), (3380, 23863), (3409, 23660), (4732, 17045), (4870, 16562), (5915, 13636), (6331, 12740), (6370, 12662), (6818, 11830), (8281, 9740)]