21778636

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 22573364

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 109, 209, 218, 239, 418, 436, 478, 836, 956, 1199, 2071, 2398, 2629, 4142, 4541, 4796, 5258, 8284, 9082, 10516, 18164, 22781, 26051, 45562, 49951, 52102, 91124, 99902, 104204, 199804, 286561, 494969, 573122, 989938, 1146244, 1979876, 5444659, 10889318, 21778636]

約数ペア:

[(1, 21778636), (2, 10889318), (4, 5444659), (11, 1979876), (19, 1146244), (22, 989938), (38, 573122), (44, 494969), (76, 286561), (109, 199804), (209, 104204), (218, 99902), (239, 91124), (418, 52102), (436, 49951), (478, 45562), (836, 26051), (956, 22781), (1199, 18164), (2071, 10516), (2398, 9082), (2629, 8284), (4142, 5258), (4541, 4796)]