18002180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{863}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 25543420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 863, 1043, 1490, 1726, 2086, 2980, 3452, 4172, 4315, 5215, 6041, 8630, 10430, 12082, 17260, 20860, 24164, 30205, 60410, 120820, 128587, 257174, 514348, 642935, 900109, 1285870, 1800218, 2571740, 3600436, 4500545, 9001090, 18002180]

約数ペア:

[(1, 18002180), (2, 9001090), (4, 4500545), (5, 3600436), (7, 2571740), (10, 1800218), (14, 1285870), (20, 900109), (28, 642935), (35, 514348), (70, 257174), (140, 128587), (149, 120820), (298, 60410), (596, 30205), (745, 24164), (863, 20860), (1043, 17260), (1490, 12082), (1726, 10430), (2086, 8630), (2980, 6041), (3452, 5215), (4172, 4315)]