81307408

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{55843}}^1$

素因数の和:55871

約数の個数: 40

約数和(自身を含む): 193890368

約数和(自身を除く): 112582960

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 55843, 111686, 223372, 390901, 446744, 725959, 781802, 893488, 1451918, 1563604, 2903836, 3127208, 5081713, 5807672, 6254416, 10163426, 11615344, 20326852, 40653704, 81307408]

約数ペア:

[(1, 81307408), (2, 40653704), (4, 20326852), (7, 11615344), (8, 10163426), (13, 6254416), (14, 5807672), (16, 5081713), (26, 3127208), (28, 2903836), (52, 1563604), (56, 1451918), (91, 893488), (104, 781802), (112, 725959), (182, 446744), (208, 390901), (364, 223372), (728, 111686), (1456, 55843)]