18643863

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2393}}^1$

素因数の和:2463

約数の個数: 24

約数和(自身を含む): 29474928

約数和(自身を除く): 10831065

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2393, 2597, 7179, 7791, 16751, 50253, 117257, 126829, 351771, 380487, 887803, 2663409, 6214621, 18643863]

約数ペア:

[(1, 18643863), (3, 6214621), (7, 2663409), (21, 887803), (49, 380487), (53, 351771), (147, 126829), (159, 117257), (371, 50253), (1113, 16751), (2393, 7791), (2597, 7179)]