21945580

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{4049}}^1$

素因数の和:4329

約数の個数: 24

約数和(自身を含む): 46267200

約数和(自身を除く): 24321620

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 4049, 5420, 8098, 16196, 20245, 40490, 80980, 1097279, 2194558, 4389116, 5486395, 10972790, 21945580]

約数ペア:

[(1, 21945580), (2, 10972790), (4, 5486395), (5, 4389116), (10, 2194558), (20, 1097279), (271, 80980), (542, 40490), (1084, 20245), (1355, 16196), (2710, 8098), (4049, 5420)]