21574840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2657}}^1$

素因数の和:2704

約数の個数: 64

約数和(自身を含む): 57412800

約数和(自身を除く): 35837960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2657, 4060, 5314, 8120, 10628, 13285, 18599, 21256, 26570, 37198, 53140, 74396, 77053, 92995, 106280, 148792, 154106, 185990, 308212, 371980, 385265, 539371, 616424, 743960, 770530, 1078742, 1541060, 2157484, 2696855, 3082120, 4314968, 5393710, 10787420, 21574840]

約数ペア:

[(1, 21574840), (2, 10787420), (4, 5393710), (5, 4314968), (7, 3082120), (8, 2696855), (10, 2157484), (14, 1541060), (20, 1078742), (28, 770530), (29, 743960), (35, 616424), (40, 539371), (56, 385265), (58, 371980), (70, 308212), (116, 185990), (140, 154106), (145, 148792), (203, 106280), (232, 92995), (280, 77053), (290, 74396), (406, 53140), (580, 37198), (812, 26570), (1015, 21256), (1160, 18599), (1624, 13285), (2030, 10628), (2657, 8120), (4060, 5314)]