18669591

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{233}}^1\times {\mathrm{307}}^1$

素因数の和:575

約数の個数: 24

約数和(自身を含む): 28108080

約数和(自身を除く): 9438489

約数列:

[1, 3, 9, 29, 87, 233, 261, 307, 699, 921, 2097, 2763, 6757, 8903, 20271, 26709, 60813, 71531, 80127, 214593, 643779, 2074399, 6223197, 18669591]

約数ペア:

[(1, 18669591), (3, 6223197), (9, 2074399), (29, 643779), (87, 214593), (233, 80127), (261, 71531), (307, 60813), (699, 26709), (921, 20271), (2097, 8903), (2763, 6757)]