128508723

素因数分解:

$3^2\times 7^4\times {\mathrm{19}}^1\times {\mathrm{313}}^1$

素因数の和:366

約数の個数: 60

約数和(自身を含む): 228673640

約数和(自身を除く): 100164917

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 313, 343, 399, 441, 931, 939, 1029, 1197, 2191, 2401, 2793, 2817, 3087, 5947, 6517, 6573, 7203, 8379, 15337, 17841, 19551, 19719, 21609, 41629, 45619, 46011, 53523, 58653, 107359, 124887, 136857, 138033, 291403, 322077, 374661, 410571, 751513, 874209, 966231, 2039821, 2254539, 2622627, 6119463, 6763617, 14278747, 18358389, 42836241, 128508723]

約数ペア:

[(1, 128508723), (3, 42836241), (7, 18358389), (9, 14278747), (19, 6763617), (21, 6119463), (49, 2622627), (57, 2254539), (63, 2039821), (133, 966231), (147, 874209), (171, 751513), (313, 410571), (343, 374661), (399, 322077), (441, 291403), (931, 138033), (939, 136857), (1029, 124887), (1197, 107359), (2191, 58653), (2401, 53523), (2793, 46011), (2817, 45619), (3087, 41629), (5947, 21609), (6517, 19719), (6573, 19551), (7203, 17841), (8379, 15337)]