20742100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6691}}^1$

素因数の和:6736

約数の個数: 36

約数和(自身を含む): 46469248

約数和(自身を除く): 25727148

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 6691, 13382, 26764, 33455, 66910, 133820, 167275, 207421, 334550, 414842, 669100, 829684, 1037105, 2074210, 4148420, 5185525, 10371050, 20742100]

約数ペア:

[(1, 20742100), (2, 10371050), (4, 5185525), (5, 4148420), (10, 2074210), (20, 1037105), (25, 829684), (31, 669100), (50, 414842), (62, 334550), (100, 207421), (124, 167275), (155, 133820), (310, 66910), (620, 33455), (775, 26764), (1550, 13382), (3100, 6691)]