31431260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{647}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 75769344

約数和(自身を除く): 44338084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 347, 647, 694, 1294, 1388, 1735, 2429, 2588, 3235, 3470, 4529, 4858, 6470, 6940, 9058, 9716, 12145, 12940, 18116, 22645, 24290, 45290, 48580, 90580, 224509, 449018, 898036, 1122545, 1571563, 2245090, 3143126, 4490180, 6286252, 7857815, 15715630, 31431260]

約数ペア:

[(1, 31431260), (2, 15715630), (4, 7857815), (5, 6286252), (7, 4490180), (10, 3143126), (14, 2245090), (20, 1571563), (28, 1122545), (35, 898036), (70, 449018), (140, 224509), (347, 90580), (647, 48580), (694, 45290), (1294, 24290), (1388, 22645), (1735, 18116), (2429, 12940), (2588, 12145), (3235, 9716), (3470, 9058), (4529, 6940), (4858, 6470)]