18500240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21023}}^1$

素因数の和:21047

約数の個数: 40

約数和(自身を含む): 46925568

約数和(自身を除く): 28425328

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21023, 42046, 84092, 105115, 168184, 210230, 231253, 336368, 420460, 462506, 840920, 925012, 1156265, 1681840, 1850024, 2312530, 3700048, 4625060, 9250120, 18500240]

約数ペア:

[(1, 18500240), (2, 9250120), (4, 4625060), (5, 3700048), (8, 2312530), (10, 1850024), (11, 1681840), (16, 1156265), (20, 925012), (22, 840920), (40, 462506), (44, 420460), (55, 336368), (80, 231253), (88, 210230), (110, 168184), (176, 105115), (220, 84092), (440, 42046), (880, 21023)]