61402420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{727}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 133555968

約数和(自身を除く): 72153548

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 103, 164, 205, 206, 410, 412, 515, 727, 820, 1030, 1454, 2060, 2908, 3635, 4223, 7270, 8446, 14540, 16892, 21115, 29807, 42230, 59614, 74881, 84460, 119228, 149035, 149762, 298070, 299524, 374405, 596140, 748810, 1497620, 3070121, 6140242, 12280484, 15350605, 30701210, 61402420]

約数ペア:

[(1, 61402420), (2, 30701210), (4, 15350605), (5, 12280484), (10, 6140242), (20, 3070121), (41, 1497620), (82, 748810), (103, 596140), (164, 374405), (205, 299524), (206, 298070), (410, 149762), (412, 149035), (515, 119228), (727, 84460), (820, 74881), (1030, 59614), (1454, 42230), (2060, 29807), (2908, 21115), (3635, 16892), (4223, 14540), (7270, 8446)]