421287455

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 544864320

約数和(自身を除く): 123576865

約数列:

[1, 5, 17, 85, 139, 181, 197, 695, 905, 985, 2363, 3077, 3349, 11815, 15385, 16745, 25159, 27383, 35657, 125795, 136915, 178285, 427703, 465511, 606169, 2138515, 2327555, 3030845, 4956323, 24781615, 84257491, 421287455]

約数ペア:

[(1, 421287455), (5, 84257491), (17, 24781615), (85, 4956323), (139, 3030845), (181, 2327555), (197, 2138515), (695, 606169), (905, 465511), (985, 427703), (2363, 178285), (3077, 136915), (3349, 125795), (11815, 35657), (15385, 27383), (16745, 25159)]