278325520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{881}}^1$

素因数の和:1264

約数の個数: 80

約数和(自身を含む): 708704640

約数和(自身を除く): 430379120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 359, 440, 718, 880, 881, 1436, 1762, 1795, 2872, 3524, 3590, 3949, 4405, 5744, 7048, 7180, 7898, 8810, 9691, 14096, 14360, 15796, 17620, 19382, 19745, 28720, 31592, 35240, 38764, 39490, 48455, 63184, 70480, 77528, 78980, 96910, 155056, 157960, 193820, 315920, 316279, 387640, 632558, 775280, 1265116, 1581395, 2530232, 3162790, 3479069, 5060464, 6325580, 6958138, 12651160, 13916276, 17395345, 25302320, 27832552, 34790690, 55665104, 69581380, 139162760, 278325520]

約数ペア:

[(1, 278325520), (2, 139162760), (4, 69581380), (5, 55665104), (8, 34790690), (10, 27832552), (11, 25302320), (16, 17395345), (20, 13916276), (22, 12651160), (40, 6958138), (44, 6325580), (55, 5060464), (80, 3479069), (88, 3162790), (110, 2530232), (176, 1581395), (220, 1265116), (359, 775280), (440, 632558), (718, 387640), (880, 316279), (881, 315920), (1436, 193820), (1762, 157960), (1795, 155056), (2872, 96910), (3524, 78980), (3590, 77528), (3949, 70480), (4405, 63184), (5744, 48455), (7048, 39490), (7180, 38764), (7898, 35240), (8810, 31592), (9691, 28720), (14096, 19745), (14360, 19382), (15796, 17620)]