20007560

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2243}}^1$

素因数の和:2477

約数の個数: 32

約数和(自身を含む): 45239040

約数和(自身を除く): 25231480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 2243, 4460, 4486, 8920, 8972, 11215, 17944, 22430, 44860, 89720, 500189, 1000378, 2000756, 2500945, 4001512, 5001890, 10003780, 20007560]

約数ペア:

[(1, 20007560), (2, 10003780), (4, 5001890), (5, 4001512), (8, 2500945), (10, 2000756), (20, 1000378), (40, 500189), (223, 89720), (446, 44860), (892, 22430), (1115, 17944), (1784, 11215), (2230, 8972), (2243, 8920), (4460, 4486)]