21664380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4057}}^1$

素因数の和:4158

約数の個数: 48

約数和(自身を含む): 61356960

約数和(自身を除く): 39692580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 89, 178, 267, 356, 445, 534, 890, 1068, 1335, 1780, 2670, 4057, 5340, 8114, 12171, 16228, 20285, 24342, 40570, 48684, 60855, 81140, 121710, 243420, 361073, 722146, 1083219, 1444292, 1805365, 2166438, 3610730, 4332876, 5416095, 7221460, 10832190, 21664380]

約数ペア:

[(1, 21664380), (2, 10832190), (3, 7221460), (4, 5416095), (5, 4332876), (6, 3610730), (10, 2166438), (12, 1805365), (15, 1444292), (20, 1083219), (30, 722146), (60, 361073), (89, 243420), (178, 121710), (267, 81140), (356, 60855), (445, 48684), (534, 40570), (890, 24342), (1068, 20285), (1335, 16228), (1780, 12171), (2670, 8114), (4057, 5340)]