20571528

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{229}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 54648000

約数和(自身を除く): 34076472

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 57, 76, 114, 152, 197, 228, 229, 394, 456, 458, 591, 687, 788, 916, 1182, 1374, 1576, 1832, 2364, 2748, 3743, 4351, 4728, 5496, 7486, 8702, 11229, 13053, 14972, 17404, 22458, 26106, 29944, 34808, 44916, 45113, 52212, 89832, 90226, 104424, 135339, 180452, 270678, 360904, 541356, 857147, 1082712, 1714294, 2571441, 3428588, 5142882, 6857176, 10285764, 20571528]

約数ペア:

[(1, 20571528), (2, 10285764), (3, 6857176), (4, 5142882), (6, 3428588), (8, 2571441), (12, 1714294), (19, 1082712), (24, 857147), (38, 541356), (57, 360904), (76, 270678), (114, 180452), (152, 135339), (197, 104424), (228, 90226), (229, 89832), (394, 52212), (456, 45113), (458, 44916), (591, 34808), (687, 29944), (788, 26106), (916, 22458), (1182, 17404), (1374, 14972), (1576, 13053), (1832, 11229), (2364, 8702), (2748, 7486), (3743, 5496), (4351, 4728)]