28738857

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1019}}^1$

素因数の和:1125

約数の個数: 32

約数和(自身を含む): 47001600

約数和(自身を除く): 18262743

約数列:

[1, 3, 7, 17, 21, 51, 79, 119, 237, 357, 553, 1019, 1343, 1659, 3057, 4029, 7133, 9401, 17323, 21399, 28203, 51969, 80501, 121261, 241503, 363783, 563507, 1368517, 1690521, 4105551, 9579619, 28738857]

約数ペア:

[(1, 28738857), (3, 9579619), (7, 4105551), (17, 1690521), (21, 1368517), (51, 563507), (79, 363783), (119, 241503), (237, 121261), (357, 80501), (553, 51969), (1019, 28203), (1343, 21399), (1659, 17323), (3057, 9401), (4029, 7133)]