400040

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 919080

約数和(自身を除く): 519040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 137, 146, 274, 292, 365, 548, 584, 685, 730, 1096, 1370, 1460, 2740, 2920, 5480, 10001, 20002, 40004, 50005, 80008, 100010, 200020, 400040]

約数ペア:

[(1, 400040), (2, 200020), (4, 100010), (5, 80008), (8, 50005), (10, 40004), (20, 20002), (40, 10001), (73, 5480), (137, 2920), (146, 2740), (274, 1460), (292, 1370), (365, 1096), (548, 730), (584, 685)]