18721724

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4153}}^1$

素因数の和:4194

約数の個数: 36

約数和(自身を含む): 39778704

約数和(自身を除く): 21056980

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4153, 4508, 8306, 16612, 29071, 58142, 95519, 116284, 191038, 203497, 382076, 406994, 668633, 813988, 1337266, 2674532, 4680431, 9360862, 18721724]

約数ペア:

[(1, 18721724), (2, 9360862), (4, 4680431), (7, 2674532), (14, 1337266), (23, 813988), (28, 668633), (46, 406994), (49, 382076), (92, 203497), (98, 191038), (161, 116284), (196, 95519), (322, 58142), (644, 29071), (1127, 16612), (2254, 8306), (4153, 4508)]