18231280

素因数分解:

$2^4\times 5^1\times {\mathrm{281}}^1\times {\mathrm{811}}^1$

素因数の和:1105

約数の個数: 40

約数和(自身を含む): 42591024

約数和(自身を除く): 24359744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 281, 562, 811, 1124, 1405, 1622, 2248, 2810, 3244, 4055, 4496, 5620, 6488, 8110, 11240, 12976, 16220, 22480, 32440, 64880, 227891, 455782, 911564, 1139455, 1823128, 2278910, 3646256, 4557820, 9115640, 18231280]

約数ペア:

[(1, 18231280), (2, 9115640), (4, 4557820), (5, 3646256), (8, 2278910), (10, 1823128), (16, 1139455), (20, 911564), (40, 455782), (80, 227891), (281, 64880), (562, 32440), (811, 22480), (1124, 16220), (1405, 12976), (1622, 11240), (2248, 8110), (2810, 6488), (3244, 5620), (4055, 4496)]