21620236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5521}}^1$

素因数の和:5625

約数の個数: 24

約数和(自身を含む): 41746320

約数和(自身を除く): 20126084

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5521, 11042, 22084, 60731, 121462, 242924, 491369, 982738, 1965476, 5405059, 10810118, 21620236]

約数ペア:

[(1, 21620236), (2, 10810118), (4, 5405059), (11, 1965476), (22, 982738), (44, 491369), (89, 242924), (178, 121462), (356, 60731), (979, 22084), (1958, 11042), (3916, 5521)]