129612860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1237}}^1$

素因数の和:1303

約数の個数: 72

約数和(自身を含む): 304488576

約数和(自身を除く): 174875716

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 310, 338, 403, 620, 676, 806, 845, 1237, 1612, 1690, 2015, 2474, 3380, 4030, 4948, 5239, 6185, 8060, 10478, 12370, 16081, 20956, 24740, 26195, 32162, 38347, 52390, 64324, 76694, 80405, 104780, 153388, 160810, 191735, 209053, 321620, 383470, 418106, 498511, 766940, 836212, 997022, 1045265, 1994044, 2090530, 2492555, 4181060, 4985110, 6480643, 9970220, 12961286, 25922572, 32403215, 64806430, 129612860]

約数ペア:

[(1, 129612860), (2, 64806430), (4, 32403215), (5, 25922572), (10, 12961286), (13, 9970220), (20, 6480643), (26, 4985110), (31, 4181060), (52, 2492555), (62, 2090530), (65, 1994044), (124, 1045265), (130, 997022), (155, 836212), (169, 766940), (260, 498511), (310, 418106), (338, 383470), (403, 321620), (620, 209053), (676, 191735), (806, 160810), (845, 153388), (1237, 104780), (1612, 80405), (1690, 76694), (2015, 64324), (2474, 52390), (3380, 38347), (4030, 32162), (4948, 26195), (5239, 24740), (6185, 20956), (8060, 16081), (10478, 12370)]