21146475

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{857}}^1$

素因数の和:924

約数の個数: 48

約数和(自身を含む): 40854528

約数和(自身を除く): 19708053

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 47, 75, 105, 141, 175, 235, 329, 525, 705, 857, 987, 1175, 1645, 2571, 3525, 4285, 4935, 5999, 8225, 12855, 17997, 21425, 24675, 29995, 40279, 64275, 89985, 120837, 149975, 201395, 281953, 449925, 604185, 845859, 1006975, 1409765, 3020925, 4229295, 7048825, 21146475]

約数ペア:

[(1, 21146475), (3, 7048825), (5, 4229295), (7, 3020925), (15, 1409765), (21, 1006975), (25, 845859), (35, 604185), (47, 449925), (75, 281953), (105, 201395), (141, 149975), (175, 120837), (235, 89985), (329, 64275), (525, 40279), (705, 29995), (857, 24675), (987, 21425), (1175, 17997), (1645, 12855), (2571, 8225), (3525, 5999), (4285, 4935)]