20291237757

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{911}}^1\times {\mathrm{2971}}^1$

素因数の和:3919

約数の個数: 72

約数和(自身を含む): 36152168832

約数和(自身を除く): 15860931075

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 911, 1071, 2499, 2733, 2971, 6377, 7497, 8199, 8913, 15487, 19131, 20797, 26739, 44639, 46461, 50507, 57393, 62391, 108409, 133917, 139383, 145579, 151521, 187173, 325227, 353549, 401751, 436737, 454563, 758863, 975681, 1060647, 1310211, 2276589, 2474843, 2706581, 3181941, 6829767, 7424529, 8119743, 18946067, 22273587, 24359229, 46011877, 56838201, 132622469, 138035631, 170514603, 322083139, 397867407, 414106893, 966249417, 1193602221, 2254581973, 2898748251, 6763745919, 20291237757]

約数ペア:

[(1, 20291237757), (3, 6763745919), (7, 2898748251), (9, 2254581973), (17, 1193602221), (21, 966249417), (49, 414106893), (51, 397867407), (63, 322083139), (119, 170514603), (147, 138035631), (153, 132622469), (357, 56838201), (441, 46011877), (833, 24359229), (911, 22273587), (1071, 18946067), (2499, 8119743), (2733, 7424529), (2971, 6829767), (6377, 3181941), (7497, 2706581), (8199, 2474843), (8913, 2276589), (15487, 1310211), (19131, 1060647), (20797, 975681), (26739, 758863), (44639, 454563), (46461, 436737), (50507, 401751), (57393, 353549), (62391, 325227), (108409, 187173), (133917, 151521), (139383, 145579)]