20819664

素因数分解:

$2^4\times 3^2\times {\mathrm{163}}^1\times {\mathrm{887}}^1$

素因数の和:1064

約数の個数: 60

約数和(自身を含む): 58689696

約数和(自身を除く): 37870032

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 163, 326, 489, 652, 887, 978, 1304, 1467, 1774, 1956, 2608, 2661, 2934, 3548, 3912, 5322, 5868, 7096, 7824, 7983, 10644, 11736, 14192, 15966, 21288, 23472, 31932, 42576, 63864, 127728, 144581, 289162, 433743, 578324, 867486, 1156648, 1301229, 1734972, 2313296, 2602458, 3469944, 5204916, 6939888, 10409832, 20819664]

約数ペア:

[(1, 20819664), (2, 10409832), (3, 6939888), (4, 5204916), (6, 3469944), (8, 2602458), (9, 2313296), (12, 1734972), (16, 1301229), (18, 1156648), (24, 867486), (36, 578324), (48, 433743), (72, 289162), (144, 144581), (163, 127728), (326, 63864), (489, 42576), (652, 31932), (887, 23472), (978, 21288), (1304, 15966), (1467, 14192), (1774, 11736), (1956, 10644), (2608, 7983), (2661, 7824), (2934, 7096), (3548, 5868), (3912, 5322)]