18973120

素因数分解:

$2^6\times 5^1\times {\mathrm{211}}^1\times {\mathrm{281}}^1$

素因数の和:509

約数の個数: 56

約数和(自身を含む): 45555408

約数和(自身を除く): 26582288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 211, 281, 320, 422, 562, 844, 1055, 1124, 1405, 1688, 2110, 2248, 2810, 3376, 4220, 4496, 5620, 6752, 8440, 8992, 11240, 13504, 16880, 17984, 22480, 33760, 44960, 59291, 67520, 89920, 118582, 237164, 296455, 474328, 592910, 948656, 1185820, 1897312, 2371640, 3794624, 4743280, 9486560, 18973120]

約数ペア:

[(1, 18973120), (2, 9486560), (4, 4743280), (5, 3794624), (8, 2371640), (10, 1897312), (16, 1185820), (20, 948656), (32, 592910), (40, 474328), (64, 296455), (80, 237164), (160, 118582), (211, 89920), (281, 67520), (320, 59291), (422, 44960), (562, 33760), (844, 22480), (1055, 17984), (1124, 16880), (1405, 13504), (1688, 11240), (2110, 8992), (2248, 8440), (2810, 6752), (3376, 5620), (4220, 4496)]