16689820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1229}}^1$

素因数の和:1342

約数の個数: 48

約数和(自身を含む): 40501440

約数和(自身を除く): 23811620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1229, 1358, 1940, 2458, 2716, 3395, 4916, 6145, 6790, 8603, 12290, 13580, 17206, 24580, 34412, 43015, 86030, 119213, 172060, 238426, 476852, 596065, 834491, 1192130, 1668982, 2384260, 3337964, 4172455, 8344910, 16689820]

約数ペア:

[(1, 16689820), (2, 8344910), (4, 4172455), (5, 3337964), (7, 2384260), (10, 1668982), (14, 1192130), (20, 834491), (28, 596065), (35, 476852), (70, 238426), (97, 172060), (140, 119213), (194, 86030), (388, 43015), (485, 34412), (679, 24580), (970, 17206), (1229, 13580), (1358, 12290), (1940, 8603), (2458, 6790), (2716, 6145), (3395, 4916)]