19819900

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{4217}}^1$

素因数の和:4278

約数の個数: 36

約数和(自身を含む): 43934688

約数和(自身を除く): 24114788

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 188, 235, 470, 940, 1175, 2350, 4217, 4700, 8434, 16868, 21085, 42170, 84340, 105425, 198199, 210850, 396398, 421700, 792796, 990995, 1981990, 3963980, 4954975, 9909950, 19819900]

約数ペア:

[(1, 19819900), (2, 9909950), (4, 4954975), (5, 3963980), (10, 1981990), (20, 990995), (25, 792796), (47, 421700), (50, 396398), (94, 210850), (100, 198199), (188, 105425), (235, 84340), (470, 42170), (940, 21085), (1175, 16868), (2350, 8434), (4217, 4700)]