21275325

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{733}}^1$

素因数の和:795

約数の個数: 48

約数和(自身を含む): 40047040

約数和(自身を除く): 18771715

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 387, 645, 675, 733, 1075, 1161, 1935, 2199, 3225, 3665, 5805, 6597, 9675, 10995, 18325, 19791, 29025, 31519, 32985, 54975, 94557, 98955, 157595, 164925, 283671, 472785, 494775, 787975, 851013, 1418355, 2363925, 4255065, 7091775, 21275325]

約数ペア:

[(1, 21275325), (3, 7091775), (5, 4255065), (9, 2363925), (15, 1418355), (25, 851013), (27, 787975), (43, 494775), (45, 472785), (75, 283671), (129, 164925), (135, 157595), (215, 98955), (225, 94557), (387, 54975), (645, 32985), (675, 31519), (733, 29025), (1075, 19791), (1161, 18325), (1935, 10995), (2199, 9675), (3225, 6597), (3665, 5805)]