212901820

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{16453}}^1$

素因数の和:17109

約数の個数: 24

約数和(自身を含む): 447812064

約数和(自身を除く): 234910244

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 2588, 3235, 6470, 12940, 16453, 32906, 65812, 82265, 164530, 329060, 10645091, 21290182, 42580364, 53225455, 106450910, 212901820]

約数ペア:

[(1, 212901820), (2, 106450910), (4, 53225455), (5, 42580364), (10, 21290182), (20, 10645091), (647, 329060), (1294, 164530), (2588, 82265), (3235, 65812), (6470, 32906), (12940, 16453)]