78304220

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1\times {\mathrm{223}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 167801088

約数和(自身を除く): 89496868

約数列:

[1, 2, 4, 5, 10, 20, 97, 181, 194, 223, 362, 388, 446, 485, 724, 892, 905, 970, 1115, 1810, 1940, 2230, 3620, 4460, 17557, 21631, 35114, 40363, 43262, 70228, 80726, 86524, 87785, 108155, 161452, 175570, 201815, 216310, 351140, 403630, 432620, 807260, 3915211, 7830422, 15660844, 19576055, 39152110, 78304220]

約数ペア:

[(1, 78304220), (2, 39152110), (4, 19576055), (5, 15660844), (10, 7830422), (20, 3915211), (97, 807260), (181, 432620), (194, 403630), (223, 351140), (362, 216310), (388, 201815), (446, 175570), (485, 161452), (724, 108155), (892, 87785), (905, 86524), (970, 80726), (1115, 70228), (1810, 43262), (1940, 40363), (2230, 35114), (3620, 21631), (4460, 17557)]