21332276

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 44688000

約数和(自身を除く): 23355724

約数列:

[1, 2, 4, 7, 14, 28, 37, 59, 74, 118, 148, 236, 259, 349, 413, 518, 698, 826, 1036, 1396, 1652, 2183, 2443, 4366, 4886, 8732, 9772, 12913, 15281, 20591, 25826, 30562, 41182, 51652, 61124, 82364, 90391, 144137, 180782, 288274, 361564, 576548, 761867, 1523734, 3047468, 5333069, 10666138, 21332276]

約数ペア:

[(1, 21332276), (2, 10666138), (4, 5333069), (7, 3047468), (14, 1523734), (28, 761867), (37, 576548), (59, 361564), (74, 288274), (118, 180782), (148, 144137), (236, 90391), (259, 82364), (349, 61124), (413, 51652), (518, 41182), (698, 30562), (826, 25826), (1036, 20591), (1396, 15281), (1652, 12913), (2183, 9772), (2443, 8732), (4366, 4886)]