21004960

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2477}}^1$

素因数の和:2545

約数の個数: 48

約数和(自身を含む): 50580936

約数和(自身を除く): 29575976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2477, 4240, 4954, 8480, 9908, 12385, 19816, 24770, 39632, 49540, 79264, 99080, 131281, 198160, 262562, 396320, 525124, 656405, 1050248, 1312810, 2100496, 2625620, 4200992, 5251240, 10502480, 21004960]

約数ペア:

[(1, 21004960), (2, 10502480), (4, 5251240), (5, 4200992), (8, 2625620), (10, 2100496), (16, 1312810), (20, 1050248), (32, 656405), (40, 525124), (53, 396320), (80, 262562), (106, 198160), (160, 131281), (212, 99080), (265, 79264), (424, 49540), (530, 39632), (848, 24770), (1060, 19816), (1696, 12385), (2120, 9908), (2477, 8480), (4240, 4954)]