18284240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17581}}^1$

素因数の和:17607

約数の個数: 40

約数和(自身を含む): 45783528

約数和(自身を除く): 27499288

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 17581, 35162, 70324, 87905, 140648, 175810, 228553, 281296, 351620, 457106, 703240, 914212, 1142765, 1406480, 1828424, 2285530, 3656848, 4571060, 9142120, 18284240]

約数ペア:

[(1, 18284240), (2, 9142120), (4, 4571060), (5, 3656848), (8, 2285530), (10, 1828424), (13, 1406480), (16, 1142765), (20, 914212), (26, 703240), (40, 457106), (52, 351620), (65, 281296), (80, 228553), (104, 175810), (130, 140648), (208, 87905), (260, 70324), (520, 35162), (1040, 17581)]