21066250

素因数分解:

$2^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{887}}^1$

素因数の和:928

約数の個数: 40

約数和(自身を含む): 41611680

約数和(自身を除く): 20545430

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 125, 190, 250, 475, 625, 887, 950, 1250, 1774, 2375, 4435, 4750, 8870, 11875, 16853, 22175, 23750, 33706, 44350, 84265, 110875, 168530, 221750, 421325, 554375, 842650, 1108750, 2106625, 4213250, 10533125, 21066250]

約数ペア:

[(1, 21066250), (2, 10533125), (5, 4213250), (10, 2106625), (19, 1108750), (25, 842650), (38, 554375), (50, 421325), (95, 221750), (125, 168530), (190, 110875), (250, 84265), (475, 44350), (625, 33706), (887, 23750), (950, 22175), (1250, 16853), (1774, 11875), (2375, 8870), (4435, 4750)]