128840212

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 246818880

約数和(自身を除く): 117978668

約数列:

[1, 2, 4, 17, 34, 43, 68, 86, 139, 172, 278, 317, 556, 634, 731, 1268, 1462, 2363, 2924, 4726, 5389, 5977, 9452, 10778, 11954, 13631, 21556, 23908, 27262, 44063, 54524, 88126, 101609, 176252, 203218, 231727, 406436, 463454, 749071, 926908, 1498142, 1894709, 2996284, 3789418, 7578836, 32210053, 64420106, 128840212]

約数ペア:

[(1, 128840212), (2, 64420106), (4, 32210053), (17, 7578836), (34, 3789418), (43, 2996284), (68, 1894709), (86, 1498142), (139, 926908), (172, 749071), (278, 463454), (317, 406436), (556, 231727), (634, 203218), (731, 176252), (1268, 101609), (1462, 88126), (2363, 54524), (2924, 44063), (4726, 27262), (5389, 23908), (5977, 21556), (9452, 13631), (10778, 11954)]