28709620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{127}}^2$

素因数の和:352

約数の個数: 36

約数和(自身を含む): 61451460

約数和(自身を除く): 32741840

約数列:

[1, 2, 4, 5, 10, 20, 89, 127, 178, 254, 356, 445, 508, 635, 890, 1270, 1780, 2540, 11303, 16129, 22606, 32258, 45212, 56515, 64516, 80645, 113030, 161290, 226060, 322580, 1435481, 2870962, 5741924, 7177405, 14354810, 28709620]

約数ペア:

[(1, 28709620), (2, 14354810), (4, 7177405), (5, 5741924), (10, 2870962), (20, 1435481), (89, 322580), (127, 226060), (178, 161290), (254, 113030), (356, 80645), (445, 64516), (508, 56515), (635, 45212), (890, 32258), (1270, 22606), (1780, 16129), (2540, 11303)]