210822500

素因数分解:

$2^2\times 5^4\times 7^2\times {\mathrm{1721}}^1$

素因数の和:1759

約数の個数: 90

約数和(自身を含む): 536607918

約数和(自身を除く): 325785418

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 125, 140, 175, 196, 245, 250, 350, 490, 500, 625, 700, 875, 980, 1225, 1250, 1721, 1750, 2450, 2500, 3442, 3500, 4375, 4900, 6125, 6884, 8605, 8750, 12047, 12250, 17210, 17500, 24094, 24500, 30625, 34420, 43025, 48188, 60235, 61250, 84329, 86050, 120470, 122500, 168658, 172100, 215125, 240940, 301175, 337316, 421645, 430250, 602350, 843290, 860500, 1075625, 1204700, 1505875, 1686580, 2108225, 2151250, 3011750, 4216450, 4302500, 6023500, 7529375, 8432900, 10541125, 15058750, 21082250, 30117500, 42164500, 52705625, 105411250, 210822500]

約数ペア:

[(1, 210822500), (2, 105411250), (4, 52705625), (5, 42164500), (7, 30117500), (10, 21082250), (14, 15058750), (20, 10541125), (25, 8432900), (28, 7529375), (35, 6023500), (49, 4302500), (50, 4216450), (70, 3011750), (98, 2151250), (100, 2108225), (125, 1686580), (140, 1505875), (175, 1204700), (196, 1075625), (245, 860500), (250, 843290), (350, 602350), (490, 430250), (500, 421645), (625, 337316), (700, 301175), (875, 240940), (980, 215125), (1225, 172100), (1250, 168658), (1721, 122500), (1750, 120470), (2450, 86050), (2500, 84329), (3442, 61250), (3500, 60235), (4375, 48188), (4900, 43025), (6125, 34420), (6884, 30625), (8605, 24500), (8750, 24094), (12047, 17500), (12250, 17210)]