20921901

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6967}}^1$

素因数の和:7001

約数の個数: 32

約数和(自身を含む): 37459968

約数和(自身を除く): 16538067

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 6967, 20901, 48769, 76637, 90571, 146307, 229911, 271713, 536459, 633997, 996281, 1609377, 1901991, 2988843, 6973967, 20921901]

約数ペア:

[(1, 20921901), (3, 6973967), (7, 2988843), (11, 1901991), (13, 1609377), (21, 996281), (33, 633997), (39, 536459), (77, 271713), (91, 229911), (143, 146307), (231, 90571), (273, 76637), (429, 48769), (1001, 20901), (3003, 6967)]