178350020

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1\times {\mathrm{617}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 381553200

約数和(自身を除く): 203203180

約数列:

[1, 2, 4, 5, 10, 20, 97, 149, 194, 298, 388, 485, 596, 617, 745, 970, 1234, 1490, 1940, 2468, 2980, 3085, 6170, 12340, 14453, 28906, 57812, 59849, 72265, 91933, 119698, 144530, 183866, 239396, 289060, 299245, 367732, 459665, 598490, 919330, 1196980, 1838660, 8917501, 17835002, 35670004, 44587505, 89175010, 178350020]

約数ペア:

[(1, 178350020), (2, 89175010), (4, 44587505), (5, 35670004), (10, 17835002), (20, 8917501), (97, 1838660), (149, 1196980), (194, 919330), (298, 598490), (388, 459665), (485, 367732), (596, 299245), (617, 289060), (745, 239396), (970, 183866), (1234, 144530), (1490, 119698), (1940, 91933), (2468, 72265), (2980, 59849), (3085, 57812), (6170, 28906), (12340, 14453)]