20447973

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{24967}}^1$

素因数の和:24993

約数の個数: 24

約数和(自身を含む): 36353408

約数和(自身を除く): 15905435

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 24967, 74901, 174769, 224703, 324571, 524307, 973713, 1572921, 2271997, 2921139, 6815991, 20447973]

約数ペア:

[(1, 20447973), (3, 6815991), (7, 2921139), (9, 2271997), (13, 1572921), (21, 973713), (39, 524307), (63, 324571), (91, 224703), (117, 174769), (273, 74901), (819, 24967)]