387920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1$

素因数の和:399

約数の個数: 40

約数和(自身を含む): 973896

約数和(自身を除く): 585976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 373, 520, 746, 1040, 1492, 1865, 2984, 3730, 4849, 5968, 7460, 9698, 14920, 19396, 24245, 29840, 38792, 48490, 77584, 96980, 193960, 387920]

約数ペア:

[(1, 387920), (2, 193960), (4, 96980), (5, 77584), (8, 48490), (10, 38792), (13, 29840), (16, 24245), (20, 19396), (26, 14920), (40, 9698), (52, 7460), (65, 5968), (80, 4849), (104, 3730), (130, 2984), (208, 1865), (260, 1492), (373, 1040), (520, 746)]