639886000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{24611}}^1$

素因数の和:24647

約数の個数: 80

約数和(自身を含む): 1666330848

約数和(自身を除く): 1026444848

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 250, 260, 325, 400, 500, 520, 650, 1000, 1040, 1300, 1625, 2000, 2600, 3250, 5200, 6500, 13000, 24611, 26000, 49222, 98444, 123055, 196888, 246110, 319943, 393776, 492220, 615275, 639886, 984440, 1230550, 1279772, 1599715, 1968880, 2461100, 2559544, 3076375, 3199430, 4922200, 5119088, 6152750, 6398860, 7998575, 9844400, 12305500, 12797720, 15997150, 24611000, 25595440, 31994300, 39992875, 49222000, 63988600, 79985750, 127977200, 159971500, 319943000, 639886000]

約数ペア:

[(1, 639886000), (2, 319943000), (4, 159971500), (5, 127977200), (8, 79985750), (10, 63988600), (13, 49222000), (16, 39992875), (20, 31994300), (25, 25595440), (26, 24611000), (40, 15997150), (50, 12797720), (52, 12305500), (65, 9844400), (80, 7998575), (100, 6398860), (104, 6152750), (125, 5119088), (130, 4922200), (200, 3199430), (208, 3076375), (250, 2559544), (260, 2461100), (325, 1968880), (400, 1599715), (500, 1279772), (520, 1230550), (650, 984440), (1000, 639886), (1040, 615275), (1300, 492220), (1625, 393776), (2000, 319943), (2600, 246110), (3250, 196888), (5200, 123055), (6500, 98444), (13000, 49222), (24611, 26000)]