31221820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31859}}^1$

素因数の和:31882

約数の個数: 36

約数和(自身を含む): 76272840

約数和(自身を除く): 45051020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 31859, 63718, 127436, 159295, 223013, 318590, 446026, 637180, 892052, 1115065, 1561091, 2230130, 3122182, 4460260, 6244364, 7805455, 15610910, 31221820]

約数ペア:

[(1, 31221820), (2, 15610910), (4, 7805455), (5, 6244364), (7, 4460260), (10, 3122182), (14, 2230130), (20, 1561091), (28, 1115065), (35, 892052), (49, 637180), (70, 446026), (98, 318590), (140, 223013), (196, 159295), (245, 127436), (490, 63718), (980, 31859)]