20977671

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{457}}^1$

素因数の和:591

約数の個数: 32

約数和(自身を含む): 33239808

約数和(自身を除く): 12262137

約数列:

[1, 3, 11, 13, 33, 39, 107, 143, 321, 429, 457, 1177, 1371, 1391, 3531, 4173, 5027, 5941, 15081, 15301, 17823, 45903, 48899, 65351, 146697, 196053, 537889, 635687, 1613667, 1907061, 6992557, 20977671]

約数ペア:

[(1, 20977671), (3, 6992557), (11, 1907061), (13, 1613667), (33, 635687), (39, 537889), (107, 196053), (143, 146697), (321, 65351), (429, 48899), (457, 45903), (1177, 17823), (1371, 15301), (1391, 15081), (3531, 5941), (4173, 5027)]