31101320

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1213}}^1$

素因数の和:1865

約数の個数: 32

約数和(自身を含む): 70144920

約数和(自身を除く): 39043600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1213, 1282, 2426, 2564, 3205, 4852, 5128, 6065, 6410, 9704, 12130, 12820, 24260, 25640, 48520, 777533, 1555066, 3110132, 3887665, 6220264, 7775330, 15550660, 31101320]

約数ペア:

[(1, 31101320), (2, 15550660), (4, 7775330), (5, 6220264), (8, 3887665), (10, 3110132), (20, 1555066), (40, 777533), (641, 48520), (1213, 25640), (1282, 24260), (2426, 12820), (2564, 12130), (3205, 9704), (4852, 6410), (5128, 6065)]