20103545

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 31256064

約数和(自身を除く): 11152519

約数列:

[1, 5, 7, 11, 35, 47, 55, 77, 101, 121, 235, 329, 385, 505, 517, 605, 707, 847, 1111, 1645, 2585, 3535, 3619, 4235, 4747, 5555, 5687, 7777, 12221, 18095, 23735, 28435, 33229, 38885, 39809, 52217, 61105, 85547, 166145, 199045, 261085, 365519, 427735, 574387, 1827595, 2871935, 4020709, 20103545]

約数ペア:

[(1, 20103545), (5, 4020709), (7, 2871935), (11, 1827595), (35, 574387), (47, 427735), (55, 365519), (77, 261085), (101, 199045), (121, 166145), (235, 85547), (329, 61105), (385, 52217), (505, 39809), (517, 38885), (605, 33229), (707, 28435), (847, 23735), (1111, 18095), (1645, 12221), (2585, 7777), (3535, 5687), (3619, 5555), (4235, 4747)]