21278520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{59107}}^1$

素因数の和:59124

約数の個数: 48

約数和(自身を含む): 69156360

約数和(自身を除く): 47877840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 59107, 118214, 177321, 236428, 295535, 354642, 472856, 531963, 591070, 709284, 886605, 1063926, 1182140, 1418568, 1773210, 2127852, 2364280, 2659815, 3546420, 4255704, 5319630, 7092840, 10639260, 21278520]

約数ペア:

[(1, 21278520), (2, 10639260), (3, 7092840), (4, 5319630), (5, 4255704), (6, 3546420), (8, 2659815), (9, 2364280), (10, 2127852), (12, 1773210), (15, 1418568), (18, 1182140), (20, 1063926), (24, 886605), (30, 709284), (36, 591070), (40, 531963), (45, 472856), (60, 354642), (72, 295535), (90, 236428), (120, 177321), (180, 118214), (360, 59107)]