71976980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{1523}}^1$

素因数の和:1688

約数の個数: 48

約数和(自身を含む): 161300160

約数和(自身を除く): 89323180

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 139, 170, 278, 340, 556, 695, 1390, 1523, 2363, 2780, 3046, 4726, 6092, 7615, 9452, 11815, 15230, 23630, 25891, 30460, 47260, 51782, 103564, 129455, 211697, 258910, 423394, 517820, 846788, 1058485, 2116970, 3598849, 4233940, 7197698, 14395396, 17994245, 35988490, 71976980]

約数ペア:

[(1, 71976980), (2, 35988490), (4, 17994245), (5, 14395396), (10, 7197698), (17, 4233940), (20, 3598849), (34, 2116970), (68, 1058485), (85, 846788), (139, 517820), (170, 423394), (278, 258910), (340, 211697), (556, 129455), (695, 103564), (1390, 51782), (1523, 47260), (2363, 30460), (2780, 25891), (3046, 23630), (4726, 15230), (6092, 11815), (7615, 9452)]