20219386064

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{1971469}}^1$

素因数の和:1972118

約数の個数: 20

約数和(自身を含む): 39236195940

約数和(自身を除く): 19016809876

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2564, 5128, 10256, 1971469, 3942938, 7885876, 15771752, 31543504, 1263711629, 2527423258, 5054846516, 10109693032, 20219386064]

約数ペア:

[(1, 20219386064), (2, 10109693032), (4, 5054846516), (8, 2527423258), (16, 1263711629), (641, 31543504), (1282, 15771752), (2564, 7885876), (5128, 3942938), (10256, 1971469)]