19806785145

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{2994223}}^1$

素因数の和:2994251

約数の個数: 48

約数和(自身を含む): 40960984320

約数和(自身を除く): 21154199175

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205, 6615, 2994223, 8982669, 14971115, 20959561, 26948007, 44913345, 62878683, 80844021, 104797805, 134740035, 146716927, 188636049, 314393415, 404220105, 440150781, 565908147, 733584635, 943180245, 1320452343, 2200753905, 2829540735, 3961357029, 6602261715, 19806785145]

約数ペア:

[(1, 19806785145), (3, 6602261715), (5, 3961357029), (7, 2829540735), (9, 2200753905), (15, 1320452343), (21, 943180245), (27, 733584635), (35, 565908147), (45, 440150781), (49, 404220105), (63, 314393415), (105, 188636049), (135, 146716927), (147, 134740035), (189, 104797805), (245, 80844021), (315, 62878683), (441, 44913345), (735, 26948007), (945, 20959561), (1323, 14971115), (2205, 8982669), (6615, 2994223)]