21802550

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{809}}^1$

素因数の和:846

約数の個数: 72

約数和(自身を含む): 51525720

約数和(自身を除く): 29723170

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 49, 50, 55, 70, 77, 98, 110, 154, 175, 245, 275, 350, 385, 490, 539, 550, 770, 809, 1078, 1225, 1618, 1925, 2450, 2695, 3850, 4045, 5390, 5663, 8090, 8899, 11326, 13475, 17798, 20225, 26950, 28315, 39641, 40450, 44495, 56630, 62293, 79282, 88990, 124586, 141575, 198205, 222475, 283150, 311465, 396410, 436051, 444950, 622930, 872102, 991025, 1557325, 1982050, 2180255, 3114650, 4360510, 10901275, 21802550]

約数ペア:

[(1, 21802550), (2, 10901275), (5, 4360510), (7, 3114650), (10, 2180255), (11, 1982050), (14, 1557325), (22, 991025), (25, 872102), (35, 622930), (49, 444950), (50, 436051), (55, 396410), (70, 311465), (77, 283150), (98, 222475), (110, 198205), (154, 141575), (175, 124586), (245, 88990), (275, 79282), (350, 62293), (385, 56630), (490, 44495), (539, 40450), (550, 39641), (770, 28315), (809, 26950), (1078, 20225), (1225, 17798), (1618, 13475), (1925, 11326), (2450, 8899), (2695, 8090), (3850, 5663), (4045, 5390)]