28991675

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:383

約数の個数: 24

約数和(自身を含む): 37237200

約数和(自身を除く): 8245525

約数列:

[1, 5, 25, 43, 149, 181, 215, 745, 905, 1075, 3725, 4525, 6407, 7783, 26969, 32035, 38915, 134845, 160175, 194575, 674225, 1159667, 5798335, 28991675]

約数ペア:

[(1, 28991675), (5, 5798335), (25, 1159667), (43, 674225), (149, 194575), (181, 160175), (215, 134845), (745, 38915), (905, 32035), (1075, 26969), (3725, 7783), (4525, 6407)]