80943940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{52561}}^1$

素因数の和:52588

約数の個数: 48

約数和(自身を含む): 211929984

約数和(自身を除く): 130986044

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 52561, 105122, 210244, 262805, 367927, 525610, 578171, 735854, 1051220, 1156342, 1471708, 1839635, 2312684, 2890855, 3679270, 4047197, 5781710, 7358540, 8094394, 11563420, 16188788, 20235985, 40471970, 80943940]

約数ペア:

[(1, 80943940), (2, 40471970), (4, 20235985), (5, 16188788), (7, 11563420), (10, 8094394), (11, 7358540), (14, 5781710), (20, 4047197), (22, 3679270), (28, 2890855), (35, 2312684), (44, 1839635), (55, 1471708), (70, 1156342), (77, 1051220), (110, 735854), (140, 578171), (154, 525610), (220, 367927), (308, 262805), (385, 210244), (770, 105122), (1540, 52561)]