644681996

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{7307}}^1$

素因数の和:7478

約数の個数: 48

約数和(自身を含む): 1355429376

約数和(自身を除く): 710747380

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 137, 161, 274, 322, 548, 644, 959, 1918, 3151, 3836, 6302, 7307, 12604, 14614, 22057, 29228, 44114, 51149, 88228, 102298, 168061, 204596, 336122, 672244, 1001059, 1176427, 2002118, 2352854, 4004236, 4705708, 7007413, 14014826, 23024357, 28029652, 46048714, 92097428, 161170499, 322340998, 644681996]

約数ペア:

[(1, 644681996), (2, 322340998), (4, 161170499), (7, 92097428), (14, 46048714), (23, 28029652), (28, 23024357), (46, 14014826), (92, 7007413), (137, 4705708), (161, 4004236), (274, 2352854), (322, 2002118), (548, 1176427), (644, 1001059), (959, 672244), (1918, 336122), (3151, 204596), (3836, 168061), (6302, 102298), (7307, 88228), (12604, 51149), (14614, 44114), (22057, 29228)]