80991560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{11981}}^1$

素因数の和:12018

約数の個数: 48

約数和(自身を含む): 197343540

約数和(自身を除く): 116351980

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3380, 6760, 11981, 23962, 47924, 59905, 95848, 119810, 155753, 239620, 311506, 479240, 623012, 778765, 1246024, 1557530, 2024789, 3115060, 4049578, 6230120, 8099156, 10123945, 16198312, 20247890, 40495780, 80991560]

約数ペア:

[(1, 80991560), (2, 40495780), (4, 20247890), (5, 16198312), (8, 10123945), (10, 8099156), (13, 6230120), (20, 4049578), (26, 3115060), (40, 2024789), (52, 1557530), (65, 1246024), (104, 778765), (130, 623012), (169, 479240), (260, 311506), (338, 239620), (520, 155753), (676, 119810), (845, 95848), (1352, 59905), (1690, 47924), (3380, 23962), (6760, 11981)]