81918220

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{541}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 176466528

約数和(自身を除く): 94548308

約数列:

[1, 2, 4, 5, 10, 20, 67, 113, 134, 226, 268, 335, 452, 541, 565, 670, 1082, 1130, 1340, 2164, 2260, 2705, 5410, 7571, 10820, 15142, 30284, 36247, 37855, 61133, 72494, 75710, 122266, 144988, 151420, 181235, 244532, 305665, 362470, 611330, 724940, 1222660, 4095911, 8191822, 16383644, 20479555, 40959110, 81918220]

約数ペア:

[(1, 81918220), (2, 40959110), (4, 20479555), (5, 16383644), (10, 8191822), (20, 4095911), (67, 1222660), (113, 724940), (134, 611330), (226, 362470), (268, 305665), (335, 244532), (452, 181235), (541, 151420), (565, 144988), (670, 122266), (1082, 75710), (1130, 72494), (1340, 61133), (2164, 37855), (2260, 36247), (2705, 30284), (5410, 15142), (7571, 10820)]