20811400

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{6121}}^1$

素因数の和:6154

約数の個数: 48

約数和(自身を含む): 51241140

約数和(自身を除く): 30429740

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 136, 170, 200, 340, 425, 680, 850, 1700, 3400, 6121, 12242, 24484, 30605, 48968, 61210, 104057, 122420, 153025, 208114, 244840, 306050, 416228, 520285, 612100, 832456, 1040570, 1224200, 2081140, 2601425, 4162280, 5202850, 10405700, 20811400]

約数ペア:

[(1, 20811400), (2, 10405700), (4, 5202850), (5, 4162280), (8, 2601425), (10, 2081140), (17, 1224200), (20, 1040570), (25, 832456), (34, 612100), (40, 520285), (50, 416228), (68, 306050), (85, 244840), (100, 208114), (136, 153025), (170, 122420), (200, 104057), (340, 61210), (425, 48968), (680, 30605), (850, 24484), (1700, 12242), (3400, 6121)]