21487245

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1091}}^1$

素因数の和:1213

約数の個数: 32

約数和(自身を含む): 37425024

約数和(自身を除く): 15937779

約数列:

[1, 3, 5, 13, 15, 39, 65, 101, 195, 303, 505, 1091, 1313, 1515, 3273, 3939, 5455, 6565, 14183, 16365, 19695, 42549, 70915, 110191, 212745, 330573, 550955, 1432483, 1652865, 4297449, 7162415, 21487245]

約数ペア:

[(1, 21487245), (3, 7162415), (5, 4297449), (13, 1652865), (15, 1432483), (39, 550955), (65, 330573), (101, 212745), (195, 110191), (303, 70915), (505, 42549), (1091, 19695), (1313, 16365), (1515, 14183), (3273, 6565), (3939, 5455)]