81253660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{883}}^1$

素因数の和:1042

約数の個数: 48

約数和(自身を含む): 176432256

約数和(自身を除く): 95178596

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 107, 172, 214, 215, 428, 430, 535, 860, 883, 1070, 1766, 2140, 3532, 4415, 4601, 8830, 9202, 17660, 18404, 23005, 37969, 46010, 75938, 92020, 94481, 151876, 188962, 189845, 377924, 379690, 472405, 759380, 944810, 1889620, 4062683, 8125366, 16250732, 20313415, 40626830, 81253660]

約数ペア:

[(1, 81253660), (2, 40626830), (4, 20313415), (5, 16250732), (10, 8125366), (20, 4062683), (43, 1889620), (86, 944810), (107, 759380), (172, 472405), (214, 379690), (215, 377924), (428, 189845), (430, 188962), (535, 151876), (860, 94481), (883, 92020), (1070, 75938), (1766, 46010), (2140, 37969), (3532, 23005), (4415, 18404), (4601, 17660), (8830, 9202)]