21209928

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{241}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 56337600

約数和(自身を除く): 35127672

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 57, 76, 114, 152, 193, 228, 241, 386, 456, 482, 579, 723, 772, 964, 1158, 1446, 1544, 1928, 2316, 2892, 3667, 4579, 4632, 5784, 7334, 9158, 11001, 13737, 14668, 18316, 22002, 27474, 29336, 36632, 44004, 46513, 54948, 88008, 93026, 109896, 139539, 186052, 279078, 372104, 558156, 883747, 1116312, 1767494, 2651241, 3534988, 5302482, 7069976, 10604964, 21209928]

約数ペア:

[(1, 21209928), (2, 10604964), (3, 7069976), (4, 5302482), (6, 3534988), (8, 2651241), (12, 1767494), (19, 1116312), (24, 883747), (38, 558156), (57, 372104), (76, 279078), (114, 186052), (152, 139539), (193, 109896), (228, 93026), (241, 88008), (386, 54948), (456, 46513), (482, 44004), (579, 36632), (723, 29336), (772, 27474), (964, 22002), (1158, 18316), (1446, 14668), (1544, 13737), (1928, 11001), (2316, 9158), (2892, 7334), (3667, 5784), (4579, 4632)]