18201008

素因数分解:

$2^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1609}}^1$

素因数の和:1725

約数の個数: 40

約数和(自身を含む): 40726560

約数和(自身を除く): 22525552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 101, 112, 202, 404, 707, 808, 1414, 1609, 1616, 2828, 3218, 5656, 6436, 11263, 11312, 12872, 22526, 25744, 45052, 90104, 162509, 180208, 325018, 650036, 1137563, 1300072, 2275126, 2600144, 4550252, 9100504, 18201008]

約数ペア:

[(1, 18201008), (2, 9100504), (4, 4550252), (7, 2600144), (8, 2275126), (14, 1300072), (16, 1137563), (28, 650036), (56, 325018), (101, 180208), (112, 162509), (202, 90104), (404, 45052), (707, 25744), (808, 22526), (1414, 12872), (1609, 11312), (1616, 11263), (2828, 6436), (3218, 5656)]