1815320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3491}}^1$

素因数の和:3515

約数の個数: 32

約数和(自身を含む): 4399920

約数和(自身を除く): 2584600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 3491, 6982, 13964, 17455, 27928, 34910, 45383, 69820, 90766, 139640, 181532, 226915, 363064, 453830, 907660, 1815320]

約数ペア:

[(1, 1815320), (2, 907660), (4, 453830), (5, 363064), (8, 226915), (10, 181532), (13, 139640), (20, 90766), (26, 69820), (40, 45383), (52, 34910), (65, 27928), (104, 17455), (130, 13964), (260, 6982), (520, 3491)]