81568240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{733}}^1$

素因数の和:866

約数の個数: 80

約数和(自身を含む): 206424288

約数和(自身を除く): 124856048

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 107, 130, 208, 214, 260, 428, 520, 535, 733, 856, 1040, 1070, 1391, 1466, 1712, 2140, 2782, 2932, 3665, 4280, 5564, 5864, 6955, 7330, 8560, 9529, 11128, 11728, 13910, 14660, 19058, 22256, 27820, 29320, 38116, 47645, 55640, 58640, 76232, 78431, 95290, 111280, 152464, 156862, 190580, 313724, 381160, 392155, 627448, 762320, 784310, 1019603, 1254896, 1568620, 2039206, 3137240, 4078412, 5098015, 6274480, 8156824, 10196030, 16313648, 20392060, 40784120, 81568240]

約数ペア:

[(1, 81568240), (2, 40784120), (4, 20392060), (5, 16313648), (8, 10196030), (10, 8156824), (13, 6274480), (16, 5098015), (20, 4078412), (26, 3137240), (40, 2039206), (52, 1568620), (65, 1254896), (80, 1019603), (104, 784310), (107, 762320), (130, 627448), (208, 392155), (214, 381160), (260, 313724), (428, 190580), (520, 156862), (535, 152464), (733, 111280), (856, 95290), (1040, 78431), (1070, 76232), (1391, 58640), (1466, 55640), (1712, 47645), (2140, 38116), (2782, 29320), (2932, 27820), (3665, 22256), (4280, 19058), (5564, 14660), (5864, 13910), (6955, 11728), (7330, 11128), (8560, 9529)]