20218450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{947}}^1$

素因数の和:1027

約数の個数: 48

約数和(自身を含む): 43729344

約数和(自身を除く): 23510894

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 61, 70, 122, 175, 305, 350, 427, 610, 854, 947, 1525, 1894, 2135, 3050, 4270, 4735, 6629, 9470, 10675, 13258, 21350, 23675, 33145, 47350, 57767, 66290, 115534, 165725, 288835, 331450, 404369, 577670, 808738, 1444175, 2021845, 2888350, 4043690, 10109225, 20218450]

約数ペア:

[(1, 20218450), (2, 10109225), (5, 4043690), (7, 2888350), (10, 2021845), (14, 1444175), (25, 808738), (35, 577670), (50, 404369), (61, 331450), (70, 288835), (122, 165725), (175, 115534), (305, 66290), (350, 57767), (427, 47350), (610, 33145), (854, 23675), (947, 21350), (1525, 13258), (1894, 10675), (2135, 9470), (3050, 6629), (4270, 4735)]