20198820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7829}}^1$

素因数の和:7884

約数の個数: 48

約数和(自身を含む): 57879360

約数和(自身を除く): 37680540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 7829, 15658, 23487, 31316, 39145, 46974, 78290, 93948, 117435, 156580, 234870, 336647, 469740, 673294, 1009941, 1346588, 1683235, 2019882, 3366470, 4039764, 5049705, 6732940, 10099410, 20198820]

約数ペア:

[(1, 20198820), (2, 10099410), (3, 6732940), (4, 5049705), (5, 4039764), (6, 3366470), (10, 2019882), (12, 1683235), (15, 1346588), (20, 1009941), (30, 673294), (43, 469740), (60, 336647), (86, 234870), (129, 156580), (172, 117435), (215, 93948), (258, 78290), (430, 46974), (516, 39145), (645, 31316), (860, 23487), (1290, 15658), (2580, 7829)]