1900978037

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1\times {\mathrm{389}}^1$

素因数の和:785

約数の個数: 32

約数和(自身を含む): 2300313600

約数和(自身を除く): 399335563

約数列:

[1, 7, 23, 127, 161, 239, 389, 889, 1673, 2723, 2921, 5497, 8947, 20447, 30353, 38479, 49403, 62629, 92971, 212471, 345821, 650797, 698119, 1136269, 2138333, 4886833, 7953883, 11807317, 14968331, 82651219, 271568291, 1900978037]

約数ペア:

[(1, 1900978037), (7, 271568291), (23, 82651219), (127, 14968331), (161, 11807317), (239, 7953883), (389, 4886833), (889, 2138333), (1673, 1136269), (2723, 698119), (2921, 650797), (5497, 345821), (8947, 212471), (20447, 92971), (30353, 62629), (38479, 49403)]