19108940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13457}}^1$

素因数の和:13537

約数の個数: 24

約数和(自身を含む): 40696992

約数和(自身を除く): 21588052

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13457, 26914, 53828, 67285, 134570, 269140, 955447, 1910894, 3821788, 4777235, 9554470, 19108940]

約数ペア:

[(1, 19108940), (2, 9554470), (4, 4777235), (5, 3821788), (10, 1910894), (20, 955447), (71, 269140), (142, 134570), (284, 67285), (355, 53828), (710, 26914), (1420, 13457)]