161856890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{40163}}^1$

素因数の和:40214

約数の個数: 32

約数和(自身を含む): 323882496

約数和(自身を除く): 162025606

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 40163, 80326, 200815, 401630, 522119, 1044238, 1245053, 2490106, 2610595, 5221190, 6225265, 12450530, 16185689, 32371378, 80928445, 161856890]

約数ペア:

[(1, 161856890), (2, 80928445), (5, 32371378), (10, 16185689), (13, 12450530), (26, 6225265), (31, 5221190), (62, 2610595), (65, 2490106), (130, 1245053), (155, 1044238), (310, 522119), (403, 401630), (806, 200815), (2015, 80326), (4030, 40163)]