19892180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12917}}^1$

素因数の和:12944

約数の個数: 48

約数和(自身を含む): 52085376

約数和(自身を除く): 32193196

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12917, 25834, 51668, 64585, 90419, 129170, 142087, 180838, 258340, 284174, 361676, 452095, 568348, 710435, 904190, 994609, 1420870, 1808380, 1989218, 2841740, 3978436, 4973045, 9946090, 19892180]

約数ペア:

[(1, 19892180), (2, 9946090), (4, 4973045), (5, 3978436), (7, 2841740), (10, 1989218), (11, 1808380), (14, 1420870), (20, 994609), (22, 904190), (28, 710435), (35, 568348), (44, 452095), (55, 361676), (70, 284174), (77, 258340), (110, 180838), (140, 142087), (154, 129170), (220, 90419), (308, 64585), (385, 51668), (770, 25834), (1540, 12917)]