19778104658

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{691}}^1\times {\mathrm{20771}}^1$

素因数の和:21530

約数の個数: 32

約数和(自身を含む): 32600740032

約数和(自身を除く): 12822635374

約数列:

[1, 2, 13, 26, 53, 106, 689, 691, 1378, 1382, 8983, 17966, 20771, 36623, 41542, 73246, 270023, 476099, 540046, 952198, 1100863, 2201726, 14311219, 14352761, 28622438, 28705522, 186585893, 373171786, 760696333, 1521392666, 9889052329, 19778104658]

約数ペア:

[(1, 19778104658), (2, 9889052329), (13, 1521392666), (26, 760696333), (53, 373171786), (106, 186585893), (689, 28705522), (691, 28622438), (1378, 14352761), (1382, 14311219), (8983, 2201726), (17966, 1100863), (20771, 952198), (36623, 540046), (41542, 476099), (73246, 270023)]