21557040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89821}}^1$

素因数の和:89837

約数の個数: 40

約数和(自身を含む): 66827568

約数和(自身を除く): 45270528

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 89821, 179642, 269463, 359284, 449105, 538926, 718568, 898210, 1077852, 1347315, 1437136, 1796420, 2155704, 2694630, 3592840, 4311408, 5389260, 7185680, 10778520, 21557040]

約数ペア:

[(1, 21557040), (2, 10778520), (3, 7185680), (4, 5389260), (5, 4311408), (6, 3592840), (8, 2694630), (10, 2155704), (12, 1796420), (15, 1437136), (16, 1347315), (20, 1077852), (24, 898210), (30, 718568), (40, 538926), (48, 449105), (60, 359284), (80, 269463), (120, 179642), (240, 89821)]