20847484

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 23504516

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 149, 263, 266, 298, 526, 532, 596, 1043, 1052, 1841, 2086, 2831, 3682, 4172, 4997, 5662, 7364, 9994, 11324, 19817, 19988, 34979, 39187, 39634, 69958, 78374, 79268, 139916, 156748, 274309, 548618, 744553, 1097236, 1489106, 2978212, 5211871, 10423742, 20847484]

約数ペア:

[(1, 20847484), (2, 10423742), (4, 5211871), (7, 2978212), (14, 1489106), (19, 1097236), (28, 744553), (38, 548618), (76, 274309), (133, 156748), (149, 139916), (263, 79268), (266, 78374), (298, 69958), (526, 39634), (532, 39187), (596, 34979), (1043, 19988), (1052, 19817), (1841, 11324), (2086, 9994), (2831, 7364), (3682, 5662), (4172, 4997)]