890221420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{130531}}^1$

素因数の和:130582

約数の個数: 48

約数和(自身を含む): 2105220096

約数和(自身を除く): 1214998676

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 130531, 261062, 522124, 652655, 1305310, 1435841, 2610620, 2871682, 4046461, 5743364, 7179205, 8092922, 14358410, 16185844, 20232305, 28716820, 40464610, 44511071, 80929220, 89022142, 178044284, 222555355, 445110710, 890221420]

約数ペア:

[(1, 890221420), (2, 445110710), (4, 222555355), (5, 178044284), (10, 89022142), (11, 80929220), (20, 44511071), (22, 40464610), (31, 28716820), (44, 20232305), (55, 16185844), (62, 14358410), (110, 8092922), (124, 7179205), (155, 5743364), (220, 4046461), (310, 2871682), (341, 2610620), (620, 1435841), (682, 1305310), (1364, 652655), (1705, 522124), (3410, 261062), (6820, 130531)]