405170420

素因数分解:

$2^2\times 5^1\times {\mathrm{1319}}^1\times {\mathrm{15359}}^1$

素因数の和:16687

約数の個数: 24

約数和(自身を含む): 851558400

約数和(自身を除く): 446387980

約数列:

[1, 2, 4, 5, 10, 20, 1319, 2638, 5276, 6595, 13190, 15359, 26380, 30718, 61436, 76795, 153590, 307180, 20258521, 40517042, 81034084, 101292605, 202585210, 405170420]

約数ペア:

[(1, 405170420), (2, 202585210), (4, 101292605), (5, 81034084), (10, 40517042), (20, 20258521), (1319, 307180), (2638, 153590), (5276, 76795), (6595, 61436), (13190, 30718), (15359, 26380)]