20019580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{947}}^1$

素因数の和:1114

約数の個数: 48

約数和(自身を含む): 48416256

約数和(自身を除く): 28396676

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151, 302, 604, 755, 947, 1057, 1510, 1894, 2114, 3020, 3788, 4228, 4735, 5285, 6629, 9470, 10570, 13258, 18940, 21140, 26516, 33145, 66290, 132580, 142997, 285994, 571988, 714985, 1000979, 1429970, 2001958, 2859940, 4003916, 5004895, 10009790, 20019580]

約数ペア:

[(1, 20019580), (2, 10009790), (4, 5004895), (5, 4003916), (7, 2859940), (10, 2001958), (14, 1429970), (20, 1000979), (28, 714985), (35, 571988), (70, 285994), (140, 142997), (151, 132580), (302, 66290), (604, 33145), (755, 26516), (947, 21140), (1057, 18940), (1510, 13258), (1894, 10570), (2114, 9470), (3020, 6629), (3788, 5285), (4228, 4735)]