655845540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{1561537}}^1$

素因数の和:1561556

約数の個数: 48

約数和(自身を含む): 2098707072

約数和(自身を除く): 1442861532

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 1561537, 3123074, 4684611, 6246148, 7807685, 9369222, 10930759, 15615370, 18738444, 21861518, 23423055, 31230740, 32792277, 43723036, 46846110, 54653795, 65584554, 93692220, 109307590, 131169108, 163961385, 218615180, 327922770, 655845540]

約数ペア:

[(1, 655845540), (2, 327922770), (3, 218615180), (4, 163961385), (5, 131169108), (6, 109307590), (7, 93692220), (10, 65584554), (12, 54653795), (14, 46846110), (15, 43723036), (20, 32792277), (21, 31230740), (28, 23423055), (30, 21861518), (35, 18738444), (42, 15615370), (60, 10930759), (70, 9369222), (84, 7807685), (105, 6246148), (140, 4684611), (210, 3123074), (420, 1561537)]