20995065

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1709}}^1$

素因数の和:1743

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 24969735

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1709, 1755, 2457, 4095, 5127, 8545, 11963, 12285, 15381, 22217, 25635, 35889, 46143, 59815, 66651, 76905, 107667, 111085, 155519, 179445, 199953, 230715, 323001, 333255, 466557, 538335, 599859, 777595, 999765, 1399671, 1615005, 2332785, 2999295, 4199013, 6998355, 20995065]

約数ペア:

[(1, 20995065), (3, 6998355), (5, 4199013), (7, 2999295), (9, 2332785), (13, 1615005), (15, 1399671), (21, 999765), (27, 777595), (35, 599859), (39, 538335), (45, 466557), (63, 333255), (65, 323001), (91, 230715), (105, 199953), (117, 179445), (135, 155519), (189, 111085), (195, 107667), (273, 76905), (315, 66651), (351, 59815), (455, 46143), (585, 35889), (819, 25635), (945, 22217), (1365, 15381), (1709, 12285), (1755, 11963), (2457, 8545), (4095, 5127)]