21333522

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{487}}^1$

素因数の和:655

約数の個数: 48

約数和(自身を含む): 50068800

約数和(自身を除く): 28735278

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 149, 294, 298, 447, 487, 894, 974, 1043, 1461, 2086, 2922, 3129, 3409, 6258, 6818, 7301, 10227, 14602, 20454, 21903, 23863, 43806, 47726, 71589, 72563, 143178, 145126, 217689, 435378, 507941, 1015882, 1523823, 3047646, 3555587, 7111174, 10666761, 21333522]

約数ペア:

[(1, 21333522), (2, 10666761), (3, 7111174), (6, 3555587), (7, 3047646), (14, 1523823), (21, 1015882), (42, 507941), (49, 435378), (98, 217689), (147, 145126), (149, 143178), (294, 72563), (298, 71589), (447, 47726), (487, 43806), (894, 23863), (974, 21903), (1043, 20454), (1461, 14602), (2086, 10227), (2922, 7301), (3129, 6818), (3409, 6258)]