20171958

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 43525440

約数和(自身を除く): 23353482

約数列:

[1, 2, 3, 6, 19, 38, 57, 67, 114, 134, 139, 201, 278, 361, 402, 417, 722, 834, 1083, 1273, 2166, 2546, 2641, 3819, 5282, 7638, 7923, 9313, 15846, 18626, 24187, 27939, 48374, 50179, 55878, 72561, 100358, 145122, 150537, 176947, 301074, 353894, 530841, 1061682, 3361993, 6723986, 10085979, 20171958]

約数ペア:

[(1, 20171958), (2, 10085979), (3, 6723986), (6, 3361993), (19, 1061682), (38, 530841), (57, 353894), (67, 301074), (114, 176947), (134, 150537), (139, 145122), (201, 100358), (278, 72561), (361, 55878), (402, 50179), (417, 48374), (722, 27939), (834, 24187), (1083, 18626), (1273, 15846), (2166, 9313), (2546, 7923), (2641, 7638), (3819, 5282)]