20565040

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4357}}^1$

素因数の和:4429

約数の個数: 40

約数和(自身を含む): 48635280

約数和(自身を除く): 28070240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4357, 4720, 8714, 17428, 21785, 34856, 43570, 69712, 87140, 174280, 257063, 348560, 514126, 1028252, 1285315, 2056504, 2570630, 4113008, 5141260, 10282520, 20565040]

約数ペア:

[(1, 20565040), (2, 10282520), (4, 5141260), (5, 4113008), (8, 2570630), (10, 2056504), (16, 1285315), (20, 1028252), (40, 514126), (59, 348560), (80, 257063), (118, 174280), (236, 87140), (295, 69712), (472, 43570), (590, 34856), (944, 21785), (1180, 17428), (2360, 8714), (4357, 4720)]