256660378

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{1327}}^1$

素因数の和:1558

約数の個数: 32

約数和(自身を含む): 427021056

約数和(自身を除く): 170360678

約数列:

[1, 2, 13, 26, 43, 86, 173, 346, 559, 1118, 1327, 2249, 2654, 4498, 7439, 14878, 17251, 34502, 57061, 96707, 114122, 193414, 229571, 459142, 741793, 1483586, 2984423, 5968846, 9871553, 19743106, 128330189, 256660378]

約数ペア:

[(1, 256660378), (2, 128330189), (13, 19743106), (26, 9871553), (43, 5968846), (86, 2984423), (173, 1483586), (346, 741793), (559, 459142), (1118, 229571), (1327, 193414), (2249, 114122), (2654, 96707), (4498, 57061), (7439, 34502), (14878, 17251)]