217782020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1\times {\mathrm{1213}}^1$

素因数の和:1460

約数の個数: 48

約数和(自身を含む): 469905408

約数和(自身を除く): 252123388

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 191, 235, 382, 470, 764, 940, 955, 1213, 1910, 2426, 3820, 4852, 6065, 8977, 12130, 17954, 24260, 35908, 44885, 57011, 89770, 114022, 179540, 228044, 231683, 285055, 463366, 570110, 926732, 1140220, 1158415, 2316830, 4633660, 10889101, 21778202, 43556404, 54445505, 108891010, 217782020]

約数ペア:

[(1, 217782020), (2, 108891010), (4, 54445505), (5, 43556404), (10, 21778202), (20, 10889101), (47, 4633660), (94, 2316830), (188, 1158415), (191, 1140220), (235, 926732), (382, 570110), (470, 463366), (764, 285055), (940, 231683), (955, 228044), (1213, 179540), (1910, 114022), (2426, 89770), (3820, 57011), (4852, 44885), (6065, 35908), (8977, 24260), (12130, 17954)]