21498538

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:346

約数の個数: 32

約数和(自身を含む): 35481600

約数和(自身を除く): 13983062

約数列:

[1, 2, 19, 38, 43, 59, 86, 118, 223, 446, 817, 1121, 1634, 2242, 2537, 4237, 5074, 8474, 9589, 13157, 19178, 26314, 48203, 96406, 182191, 249983, 364382, 499966, 565751, 1131502, 10749269, 21498538]

約数ペア:

[(1, 21498538), (2, 10749269), (19, 1131502), (38, 565751), (43, 499966), (59, 364382), (86, 249983), (118, 182191), (223, 96406), (446, 48203), (817, 26314), (1121, 19178), (1634, 13157), (2242, 9589), (2537, 8474), (4237, 5074)]