81070280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{7013}}^1$

素因数の和:7058

約数の個数: 48

約数和(自身を含む): 193796820

約数和(自身を除く): 112726540

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 2312, 2890, 5780, 7013, 11560, 14026, 28052, 35065, 56104, 70130, 119221, 140260, 238442, 280520, 476884, 596105, 953768, 1192210, 2026757, 2384420, 4053514, 4768840, 8107028, 10133785, 16214056, 20267570, 40535140, 81070280]

約数ペア:

[(1, 81070280), (2, 40535140), (4, 20267570), (5, 16214056), (8, 10133785), (10, 8107028), (17, 4768840), (20, 4053514), (34, 2384420), (40, 2026757), (68, 1192210), (85, 953768), (136, 596105), (170, 476884), (289, 280520), (340, 238442), (578, 140260), (680, 119221), (1156, 70130), (1445, 56104), (2312, 35065), (2890, 28052), (5780, 14026), (7013, 11560)]