159290420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{821}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 341787600

約数和(自身を除く): 182497180

約数列:

[1, 2, 4, 5, 10, 20, 89, 109, 178, 218, 356, 436, 445, 545, 821, 890, 1090, 1642, 1780, 2180, 3284, 4105, 8210, 9701, 16420, 19402, 38804, 48505, 73069, 89489, 97010, 146138, 178978, 194020, 292276, 357956, 365345, 447445, 730690, 894890, 1461380, 1789780, 7964521, 15929042, 31858084, 39822605, 79645210, 159290420]

約数ペア:

[(1, 159290420), (2, 79645210), (4, 39822605), (5, 31858084), (10, 15929042), (20, 7964521), (89, 1789780), (109, 1461380), (178, 894890), (218, 730690), (356, 447445), (436, 365345), (445, 357956), (545, 292276), (821, 194020), (890, 178978), (1090, 146138), (1642, 97010), (1780, 89489), (2180, 73069), (3284, 48505), (4105, 38804), (8210, 19402), (9701, 16420)]