20489301

素因数分解:

$3^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{911}}^1$

素因数の和:951

約数の個数: 48

約数和(自身を含む): 37428480

約数和(自身を除く): 16939179

約数列:

[1, 3, 7, 9, 17, 21, 27, 49, 51, 63, 119, 147, 153, 189, 357, 441, 459, 833, 911, 1071, 1323, 2499, 2733, 3213, 6377, 7497, 8199, 15487, 19131, 22491, 24597, 44639, 46461, 57393, 108409, 133917, 139383, 172179, 325227, 401751, 418149, 758863, 975681, 1205253, 2276589, 2927043, 6829767, 20489301]

約数ペア:

[(1, 20489301), (3, 6829767), (7, 2927043), (9, 2276589), (17, 1205253), (21, 975681), (27, 758863), (49, 418149), (51, 401751), (63, 325227), (119, 172179), (147, 139383), (153, 133917), (189, 108409), (357, 57393), (441, 46461), (459, 44639), (833, 24597), (911, 22491), (1071, 19131), (1323, 15487), (2499, 8199), (2733, 7497), (3213, 6377)]