21794380

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{4051}}^1$

素因数の和:4329

約数の個数: 24

約数和(自身を含む): 45949680

約数和(自身を除く): 24155300

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 4051, 5380, 8102, 16204, 20255, 40510, 81020, 1089719, 2179438, 4358876, 5448595, 10897190, 21794380]

約数ペア:

[(1, 21794380), (2, 10897190), (4, 5448595), (5, 4358876), (10, 2179438), (20, 1089719), (269, 81020), (538, 40510), (1076, 20255), (1345, 16204), (2690, 8102), (4051, 5380)]