20828750

素因数分解:

$2^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{877}}^1$

素因数の和:918

約数の個数: 40

約数和(自身を含む): 41143080

約数和(自身を除く): 20314330

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 125, 190, 250, 475, 625, 877, 950, 1250, 1754, 2375, 4385, 4750, 8770, 11875, 16663, 21925, 23750, 33326, 43850, 83315, 109625, 166630, 219250, 416575, 548125, 833150, 1096250, 2082875, 4165750, 10414375, 20828750]

約数ペア:

[(1, 20828750), (2, 10414375), (5, 4165750), (10, 2082875), (19, 1096250), (25, 833150), (38, 548125), (50, 416575), (95, 219250), (125, 166630), (190, 109625), (250, 83315), (475, 43850), (625, 33326), (877, 23750), (950, 21925), (1250, 16663), (1754, 11875), (2375, 8770), (4385, 4750)]