21115140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{351919}}^1$

素因数の和:351931

約数の個数: 24

約数和(自身を含む): 59122560

約数和(自身を除く): 38007420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 351919, 703838, 1055757, 1407676, 1759595, 2111514, 3519190, 4223028, 5278785, 7038380, 10557570, 21115140]

約数ペア:

[(1, 21115140), (2, 10557570), (3, 7038380), (4, 5278785), (5, 4223028), (6, 3519190), (10, 2111514), (12, 1759595), (15, 1407676), (20, 1055757), (30, 703838), (60, 351919)]