278340747

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{157}}^1\times {\mathrm{1637}}^1$

素因数の和:1835

約数の個数: 24

約数和(自身を含む): 394417296

約数和(自身を除く): 116076549

約数列:

[1, 3, 19, 57, 157, 361, 471, 1083, 1637, 2983, 4911, 8949, 31103, 56677, 93309, 170031, 257009, 590957, 771027, 1772871, 4883171, 14649513, 92780249, 278340747]

約数ペア:

[(1, 278340747), (3, 92780249), (19, 14649513), (57, 4883171), (157, 1772871), (361, 771027), (471, 590957), (1083, 257009), (1637, 170031), (2983, 93309), (4911, 56677), (8949, 31103)]