388274320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{787}}^1\times {\mathrm{881}}^1$

素因数の和:1688

約数の個数: 80

約数和(自身を含む): 1034183808

約数和(自身を除く): 645909488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 787, 881, 1574, 1762, 3148, 3524, 3935, 4405, 5509, 6167, 6296, 7048, 7870, 8810, 11018, 12334, 12592, 14096, 15740, 17620, 22036, 24668, 27545, 30835, 31480, 35240, 44072, 49336, 55090, 61670, 62960, 70480, 88144, 98672, 110180, 123340, 220360, 246680, 440720, 493360, 693347, 1386694, 2773388, 3466735, 4853429, 5546776, 6933470, 9706858, 11093552, 13866940, 19413716, 24267145, 27733880, 38827432, 48534290, 55467760, 77654864, 97068580, 194137160, 388274320]

約数ペア:

[(1, 388274320), (2, 194137160), (4, 97068580), (5, 77654864), (7, 55467760), (8, 48534290), (10, 38827432), (14, 27733880), (16, 24267145), (20, 19413716), (28, 13866940), (35, 11093552), (40, 9706858), (56, 6933470), (70, 5546776), (80, 4853429), (112, 3466735), (140, 2773388), (280, 1386694), (560, 693347), (787, 493360), (881, 440720), (1574, 246680), (1762, 220360), (3148, 123340), (3524, 110180), (3935, 98672), (4405, 88144), (5509, 70480), (6167, 62960), (6296, 61670), (7048, 55090), (7870, 49336), (8810, 44072), (11018, 35240), (12334, 31480), (12592, 30835), (14096, 27545), (15740, 24668), (17620, 22036)]