20781240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{173177}}^1$

素因数の和:173191

約数の個数: 32

約数和(自身を含む): 62344080

約数和(自身を除く): 41562840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 173177, 346354, 519531, 692708, 865885, 1039062, 1385416, 1731770, 2078124, 2597655, 3463540, 4156248, 5195310, 6927080, 10390620, 20781240]

約数ペア:

[(1, 20781240), (2, 10390620), (3, 6927080), (4, 5195310), (5, 4156248), (6, 3463540), (8, 2597655), (10, 2078124), (12, 1731770), (15, 1385416), (20, 1039062), (24, 865885), (30, 692708), (40, 519531), (60, 346354), (120, 173177)]