19958820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47521}}^1$

素因数の和:47540

約数の個数: 48

約数和(自身を含む): 63869568

約数和(自身を除く): 43910748

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 47521, 95042, 142563, 190084, 237605, 285126, 332647, 475210, 570252, 665294, 712815, 950420, 997941, 1330588, 1425630, 1663235, 1995882, 2851260, 3326470, 3991764, 4989705, 6652940, 9979410, 19958820]

約数ペア:

[(1, 19958820), (2, 9979410), (3, 6652940), (4, 4989705), (5, 3991764), (6, 3326470), (7, 2851260), (10, 1995882), (12, 1663235), (14, 1425630), (15, 1330588), (20, 997941), (21, 950420), (28, 712815), (30, 665294), (35, 570252), (42, 475210), (60, 332647), (70, 285126), (84, 237605), (105, 190084), (140, 142563), (210, 95042), (420, 47521)]