12845780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20719}}^1$

素因数の和:20759

約数の個数: 24

約数和(自身を含む): 27847680

約数和(自身を除く): 15001900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 20719, 41438, 82876, 103595, 207190, 414380, 642289, 1284578, 2569156, 3211445, 6422890, 12845780]

約数ペア:

[(1, 12845780), (2, 6422890), (4, 3211445), (5, 2569156), (10, 1284578), (20, 642289), (31, 414380), (62, 207190), (124, 103595), (155, 82876), (310, 41438), (620, 20719)]