21836560

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2551}}^1$

素因数の和:2671

約数の個数: 40

約数和(自身を含む): 51264576

約数和(自身を除く): 29428016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2551, 4280, 5102, 8560, 10204, 12755, 20408, 25510, 40816, 51020, 102040, 204080, 272957, 545914, 1091828, 1364785, 2183656, 2729570, 4367312, 5459140, 10918280, 21836560]

約数ペア:

[(1, 21836560), (2, 10918280), (4, 5459140), (5, 4367312), (8, 2729570), (10, 2183656), (16, 1364785), (20, 1091828), (40, 545914), (80, 272957), (107, 204080), (214, 102040), (428, 51020), (535, 40816), (856, 25510), (1070, 20408), (1712, 12755), (2140, 10204), (2551, 8560), (4280, 5102)]