21328340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{3343}}^1$

素因数の和:3392

約数の個数: 48

約数和(自身を含む): 50561280

約数和(自身を除く): 29232940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 290, 319, 580, 638, 1276, 1595, 3190, 3343, 6380, 6686, 13372, 16715, 33430, 36773, 66860, 73546, 96947, 147092, 183865, 193894, 367730, 387788, 484735, 735460, 969470, 1066417, 1938940, 2132834, 4265668, 5332085, 10664170, 21328340]

約数ペア:

[(1, 21328340), (2, 10664170), (4, 5332085), (5, 4265668), (10, 2132834), (11, 1938940), (20, 1066417), (22, 969470), (29, 735460), (44, 484735), (55, 387788), (58, 367730), (110, 193894), (116, 183865), (145, 147092), (220, 96947), (290, 73546), (319, 66860), (580, 36773), (638, 33430), (1276, 16715), (1595, 13372), (3190, 6686), (3343, 6380)]