21134200

素因数分解:

$2^3\times 5^2\times {\mathrm{251}}^1\times {\mathrm{421}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 49449960

約数和(自身を除く): 28315760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 251, 421, 502, 842, 1004, 1255, 1684, 2008, 2105, 2510, 3368, 4210, 5020, 6275, 8420, 10040, 10525, 12550, 16840, 21050, 25100, 42100, 50200, 84200, 105671, 211342, 422684, 528355, 845368, 1056710, 2113420, 2641775, 4226840, 5283550, 10567100, 21134200]

約数ペア:

[(1, 21134200), (2, 10567100), (4, 5283550), (5, 4226840), (8, 2641775), (10, 2113420), (20, 1056710), (25, 845368), (40, 528355), (50, 422684), (100, 211342), (200, 105671), (251, 84200), (421, 50200), (502, 42100), (842, 25100), (1004, 21050), (1255, 16840), (1684, 12550), (2008, 10525), (2105, 10040), (2510, 8420), (3368, 6275), (4210, 5020)]