20471560

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2039}}^1$

素因数の和:2301

約数の個数: 32

約数和(自身を含む): 46267200

約数和(自身を除く): 25795640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2039, 2510, 4078, 5020, 8156, 10040, 10195, 16312, 20390, 40780, 81560, 511789, 1023578, 2047156, 2558945, 4094312, 5117890, 10235780, 20471560]

約数ペア:

[(1, 20471560), (2, 10235780), (4, 5117890), (5, 4094312), (8, 2558945), (10, 2047156), (20, 1023578), (40, 511789), (251, 81560), (502, 40780), (1004, 20390), (1255, 16312), (2008, 10195), (2039, 10040), (2510, 8156), (4078, 5020)]