81481700

素因数分解:

$2^2\times 5^2\times {\mathrm{571}}^1\times {\mathrm{1427}}^1$

素因数の和:2012

約数の個数: 36

約数和(自身を含む): 177249072

約数和(自身を除く): 95767372

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 571, 1142, 1427, 2284, 2854, 2855, 5708, 5710, 7135, 11420, 14270, 14275, 28540, 28550, 35675, 57100, 71350, 142700, 814817, 1629634, 3259268, 4074085, 8148170, 16296340, 20370425, 40740850, 81481700]

約数ペア:

[(1, 81481700), (2, 40740850), (4, 20370425), (5, 16296340), (10, 8148170), (20, 4074085), (25, 3259268), (50, 1629634), (100, 814817), (571, 142700), (1142, 71350), (1427, 57100), (2284, 35675), (2854, 28550), (2855, 28540), (5708, 14275), (5710, 14270), (7135, 11420)]