12904930480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{400277}}^1$

素因数の和:400334

約数の個数: 80

約数和(自身を含む): 33354365184

約数和(自身を除く): 20449434704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 16120, 32240, 400277, 800554, 1601108, 2001385, 3202216, 4002770, 5203601, 6404432, 8005540, 10407202, 12408587, 16011080, 20814404, 24817174, 26018005, 32022160, 41628808, 49634348, 52036010, 62042935, 83257616, 99268696, 104072020, 124085870, 161311631, 198537392, 208144040, 248171740, 322623262, 416288080, 496343480, 645246524, 806558155, 992686960, 1290493048, 1613116310, 2580986096, 3226232620, 6452465240, 12904930480]

約数ペア:

[(1, 12904930480), (2, 6452465240), (4, 3226232620), (5, 2580986096), (8, 1613116310), (10, 1290493048), (13, 992686960), (16, 806558155), (20, 645246524), (26, 496343480), (31, 416288080), (40, 322623262), (52, 248171740), (62, 208144040), (65, 198537392), (80, 161311631), (104, 124085870), (124, 104072020), (130, 99268696), (155, 83257616), (208, 62042935), (248, 52036010), (260, 49634348), (310, 41628808), (403, 32022160), (496, 26018005), (520, 24817174), (620, 20814404), (806, 16011080), (1040, 12408587), (1240, 10407202), (1612, 8005540), (2015, 6404432), (2480, 5203601), (3224, 4002770), (4030, 3202216), (6448, 2001385), (8060, 1601108), (16120, 800554), (32240, 400277)]