12705980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1931}}^1$

素因数の和:1994

約数の個数: 48

約数和(自身を含む): 31159296

約数和(自身を除く): 18453316

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 1931, 3290, 3862, 6580, 7724, 9655, 13517, 19310, 27034, 38620, 54068, 67585, 90757, 135170, 181514, 270340, 363028, 453785, 635299, 907570, 1270598, 1815140, 2541196, 3176495, 6352990, 12705980]

約数ペア:

[(1, 12705980), (2, 6352990), (4, 3176495), (5, 2541196), (7, 1815140), (10, 1270598), (14, 907570), (20, 635299), (28, 453785), (35, 363028), (47, 270340), (70, 181514), (94, 135170), (140, 90757), (188, 67585), (235, 54068), (329, 38620), (470, 27034), (658, 19310), (940, 13517), (1316, 9655), (1645, 7724), (1931, 6580), (3290, 3862)]