28767921

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{631}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 47566848

約数和(自身を除く): 18798927

約数列:

[1, 3, 7, 13, 21, 39, 91, 167, 273, 501, 631, 1169, 1893, 2171, 3507, 4417, 6513, 8203, 13251, 15197, 24609, 45591, 57421, 105377, 172263, 316131, 737639, 1369901, 2212917, 4109703, 9589307, 28767921]

約数ペア:

[(1, 28767921), (3, 9589307), (7, 4109703), (13, 2212917), (21, 1369901), (39, 737639), (91, 316131), (167, 172263), (273, 105377), (501, 57421), (631, 45591), (1169, 24609), (1893, 15197), (2171, 13251), (3507, 8203), (4417, 6513)]