21677284

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{181}}^1\times {\mathrm{379}}^1$

素因数の和:643

約数の個数: 24

約数和(自身を含む): 38729600

約数和(自身を除く): 17052316

約数列:

[1, 2, 4, 79, 158, 181, 316, 362, 379, 724, 758, 1516, 14299, 28598, 29941, 57196, 59882, 68599, 119764, 137198, 274396, 5419321, 10838642, 21677284]

約数ペア:

[(1, 21677284), (2, 10838642), (4, 5419321), (79, 274396), (158, 137198), (181, 119764), (316, 68599), (362, 59882), (379, 57196), (724, 29941), (758, 28598), (1516, 14299)]