28012340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19727}}^1$

素因数の和:19807

約数の個数: 24

約数和(自身を含む): 59657472

約数和(自身を除く): 31645132

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 19727, 39454, 78908, 98635, 197270, 394540, 1400617, 2801234, 5602468, 7003085, 14006170, 28012340]

約数ペア:

[(1, 28012340), (2, 14006170), (4, 7003085), (5, 5602468), (10, 2801234), (20, 1400617), (71, 394540), (142, 197270), (284, 98635), (355, 78908), (710, 39454), (1420, 19727)]