28278477

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:431

約数の個数: 40

約数和(自身を含む): 45232704

約数和(自身を除く): 16954227

約数列:

[1, 3, 9, 23, 27, 43, 69, 81, 129, 207, 353, 387, 621, 989, 1059, 1161, 1863, 2967, 3177, 3483, 8119, 8901, 9531, 15179, 24357, 26703, 28593, 45537, 73071, 80109, 136611, 219213, 349117, 409833, 657639, 1047351, 1229499, 3142053, 9426159, 28278477]

約数ペア:

[(1, 28278477), (3, 9426159), (9, 3142053), (23, 1229499), (27, 1047351), (43, 657639), (69, 409833), (81, 349117), (129, 219213), (207, 136611), (353, 80109), (387, 73071), (621, 45537), (989, 28593), (1059, 26703), (1161, 24357), (1863, 15179), (2967, 9531), (3177, 8901), (3483, 8119)]