20309135

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 33592320

約数和(自身を除く): 13283185

約数列:

[1, 5, 7, 11, 17, 29, 35, 55, 77, 85, 107, 119, 145, 187, 203, 319, 385, 493, 535, 595, 749, 935, 1015, 1177, 1309, 1595, 1819, 2233, 2465, 3103, 3451, 3745, 5423, 5885, 6545, 8239, 9095, 11165, 12733, 15515, 17255, 20009, 21721, 27115, 34133, 37961, 41195, 52751, 63665, 100045, 108605, 140063, 170665, 189805, 238931, 263755, 369257, 580261, 700315, 1194655, 1846285, 2901305, 4061827, 20309135]

約数ペア:

[(1, 20309135), (5, 4061827), (7, 2901305), (11, 1846285), (17, 1194655), (29, 700315), (35, 580261), (55, 369257), (77, 263755), (85, 238931), (107, 189805), (119, 170665), (145, 140063), (187, 108605), (203, 100045), (319, 63665), (385, 52751), (493, 41195), (535, 37961), (595, 34133), (749, 27115), (935, 21721), (1015, 20009), (1177, 17255), (1309, 15515), (1595, 12733), (1819, 11165), (2233, 9095), (2465, 8239), (3103, 6545), (3451, 5885), (3745, 5423)]