20571516

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{27211}}^1$

素因数の和:27231

約数の個数: 48

約数和(自身を含む): 60954880

約数和(自身を除く): 40383364

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 27211, 54422, 81633, 108844, 163266, 190477, 244899, 326532, 380954, 489798, 571431, 734697, 761908, 979596, 1142862, 1469394, 1714293, 2285724, 2938788, 3428586, 5142879, 6857172, 10285758, 20571516]

約数ペア:

[(1, 20571516), (2, 10285758), (3, 6857172), (4, 5142879), (6, 3428586), (7, 2938788), (9, 2285724), (12, 1714293), (14, 1469394), (18, 1142862), (21, 979596), (27, 761908), (28, 734697), (36, 571431), (42, 489798), (54, 380954), (63, 326532), (84, 244899), (108, 190477), (126, 163266), (189, 108844), (252, 81633), (378, 54422), (756, 27211)]