256568403

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{937}}^1$

素因数の和:1036

約数の個数: 64

約数和(自身を含む): 453841920

約数和(自身を除く): 197273517

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 59, 91, 119, 177, 221, 273, 357, 413, 663, 767, 937, 1003, 1239, 1547, 2301, 2811, 3009, 4641, 5369, 6559, 7021, 12181, 13039, 15929, 16107, 19677, 21063, 36543, 39117, 47787, 55283, 85267, 91273, 111503, 165849, 207077, 255801, 273819, 334509, 386981, 621231, 718679, 939811, 1160943, 1449539, 2156037, 2819433, 4348617, 5030753, 6578677, 12217543, 15092259, 19736031, 36652629, 85522801, 256568403]

約数ペア:

[(1, 256568403), (3, 85522801), (7, 36652629), (13, 19736031), (17, 15092259), (21, 12217543), (39, 6578677), (51, 5030753), (59, 4348617), (91, 2819433), (119, 2156037), (177, 1449539), (221, 1160943), (273, 939811), (357, 718679), (413, 621231), (663, 386981), (767, 334509), (937, 273819), (1003, 255801), (1239, 207077), (1547, 165849), (2301, 111503), (2811, 91273), (3009, 85267), (4641, 55283), (5369, 47787), (6559, 39117), (7021, 36543), (12181, 21063), (13039, 19677), (15929, 16107)]