400660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 959616

約数和(自身を除く): 558956

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 67, 92, 115, 130, 134, 230, 260, 268, 299, 335, 460, 598, 670, 871, 1196, 1340, 1495, 1541, 1742, 2990, 3082, 3484, 4355, 5980, 6164, 7705, 8710, 15410, 17420, 20033, 30820, 40066, 80132, 100165, 200330, 400660]

約数ペア:

[(1, 400660), (2, 200330), (4, 100165), (5, 80132), (10, 40066), (13, 30820), (20, 20033), (23, 17420), (26, 15410), (46, 8710), (52, 7705), (65, 6164), (67, 5980), (92, 4355), (115, 3484), (130, 3082), (134, 2990), (230, 1742), (260, 1541), (268, 1495), (299, 1340), (335, 1196), (460, 871), (598, 670)]