18898840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15241}}^1$

素因数の和:15283

約数の個数: 32

約数和(自身を含む): 43896960

約数和(自身を除く): 24998120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15241, 30482, 60964, 76205, 121928, 152410, 304820, 472471, 609640, 944942, 1889884, 2362355, 3779768, 4724710, 9449420, 18898840]

約数ペア:

[(1, 18898840), (2, 9449420), (4, 4724710), (5, 3779768), (8, 2362355), (10, 1889884), (20, 944942), (31, 609640), (40, 472471), (62, 304820), (124, 152410), (155, 121928), (248, 76205), (310, 60964), (620, 30482), (1240, 15241)]