19857700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{11681}}^1$

素因数の和:11712

約数の個数: 36

約数和(自身を含む): 45629892

約数和(自身を除く): 25772192

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 340, 425, 850, 1700, 11681, 23362, 46724, 58405, 116810, 198577, 233620, 292025, 397154, 584050, 794308, 992885, 1168100, 1985770, 3971540, 4964425, 9928850, 19857700]

約数ペア:

[(1, 19857700), (2, 9928850), (4, 4964425), (5, 3971540), (10, 1985770), (17, 1168100), (20, 992885), (25, 794308), (34, 584050), (50, 397154), (68, 292025), (85, 233620), (100, 198577), (170, 116810), (340, 58405), (425, 46724), (850, 23362), (1700, 11681)]