21781210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 22344998

約数列:

[1, 2, 5, 10, 11, 22, 47, 55, 94, 110, 121, 235, 242, 383, 470, 517, 605, 766, 1034, 1210, 1915, 2585, 3830, 4213, 5170, 5687, 8426, 11374, 18001, 21065, 28435, 36002, 42130, 46343, 56870, 90005, 92686, 180010, 198011, 231715, 396022, 463430, 990055, 1980110, 2178121, 4356242, 10890605, 21781210]

約数ペア:

[(1, 21781210), (2, 10890605), (5, 4356242), (10, 2178121), (11, 1980110), (22, 990055), (47, 463430), (55, 396022), (94, 231715), (110, 198011), (121, 180010), (235, 92686), (242, 90005), (383, 56870), (470, 46343), (517, 42130), (605, 36002), (766, 28435), (1034, 21065), (1210, 18001), (1915, 11374), (2585, 8426), (3830, 5687), (4213, 5170)]