31856020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1637}}^1$

素因数の和:1792

約数の個数: 48

約数和(自身を含む): 77051520

約数和(自身を除く): 45195500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1637, 1946, 2780, 3274, 3892, 4865, 6548, 8185, 9730, 11459, 16370, 19460, 22918, 32740, 45836, 57295, 114590, 227543, 229180, 455086, 910172, 1137715, 1592801, 2275430, 3185602, 4550860, 6371204, 7964005, 15928010, 31856020]

約数ペア:

[(1, 31856020), (2, 15928010), (4, 7964005), (5, 6371204), (7, 4550860), (10, 3185602), (14, 2275430), (20, 1592801), (28, 1137715), (35, 910172), (70, 455086), (139, 229180), (140, 227543), (278, 114590), (556, 57295), (695, 45836), (973, 32740), (1390, 22918), (1637, 19460), (1946, 16370), (2780, 11459), (3274, 9730), (3892, 8185), (4865, 6548)]