20091925

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 30533760

約数和(自身を除く): 10441835

約数列:

[1, 5, 7, 25, 29, 35, 37, 107, 145, 175, 185, 203, 259, 535, 725, 749, 925, 1015, 1073, 1295, 2675, 3103, 3745, 3959, 5075, 5365, 6475, 7511, 15515, 18725, 19795, 21721, 26825, 27713, 37555, 77575, 98975, 108605, 114811, 138565, 187775, 543025, 574055, 692825, 803677, 2870275, 4018385, 20091925]

約数ペア:

[(1, 20091925), (5, 4018385), (7, 2870275), (25, 803677), (29, 692825), (35, 574055), (37, 543025), (107, 187775), (145, 138565), (175, 114811), (185, 108605), (203, 98975), (259, 77575), (535, 37555), (725, 27713), (749, 26825), (925, 21721), (1015, 19795), (1073, 18725), (1295, 15515), (2675, 7511), (3103, 6475), (3745, 5365), (3959, 5075)]