20557576

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2221}}^1$

素因数の和:2329

約数の個数: 32

約数和(自身を含む): 41995800

約数和(自身を除く): 21438224

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2221, 2314, 4442, 4628, 8884, 9256, 17768, 28873, 57746, 115492, 197669, 230984, 395338, 790676, 1581352, 2569697, 5139394, 10278788, 20557576]

約数ペア:

[(1, 20557576), (2, 10278788), (4, 5139394), (8, 2569697), (13, 1581352), (26, 790676), (52, 395338), (89, 230984), (104, 197669), (178, 115492), (356, 57746), (712, 28873), (1157, 17768), (2221, 9256), (2314, 8884), (4442, 4628)]