25784290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{521}}^1$

素因数の和:643

約数の個数: 48

約数和(自身を含む): 54628344

約数和(自身を除く): 28844054

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 101, 202, 245, 490, 505, 521, 707, 1010, 1042, 1414, 2605, 3535, 3647, 4949, 5210, 7070, 7294, 9898, 18235, 24745, 25529, 36470, 49490, 51058, 52621, 105242, 127645, 255290, 263105, 368347, 526210, 736694, 1841735, 2578429, 3683470, 5156858, 12892145, 25784290]

約数ペア:

[(1, 25784290), (2, 12892145), (5, 5156858), (7, 3683470), (10, 2578429), (14, 1841735), (35, 736694), (49, 526210), (70, 368347), (98, 263105), (101, 255290), (202, 127645), (245, 105242), (490, 52621), (505, 51058), (521, 49490), (707, 36470), (1010, 25529), (1042, 24745), (1414, 18235), (2605, 9898), (3535, 7294), (3647, 7070), (4949, 5210)]