489335980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{3527}}^1$

素因数の和:4534

約数の個数: 48

約数和(自身を含む): 1175924736

約数和(自身を除く): 686588756

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991, 1982, 3527, 3964, 4955, 6937, 7054, 9910, 13874, 14108, 17635, 19820, 24689, 27748, 34685, 35270, 49378, 69370, 70540, 98756, 123445, 138740, 246890, 493780, 3495257, 6990514, 13981028, 17476285, 24466799, 34952570, 48933598, 69905140, 97867196, 122333995, 244667990, 489335980]

約数ペア:

[(1, 489335980), (2, 244667990), (4, 122333995), (5, 97867196), (7, 69905140), (10, 48933598), (14, 34952570), (20, 24466799), (28, 17476285), (35, 13981028), (70, 6990514), (140, 3495257), (991, 493780), (1982, 246890), (3527, 138740), (3964, 123445), (4955, 98756), (6937, 70540), (7054, 69370), (9910, 49378), (13874, 35270), (14108, 34685), (17635, 27748), (19820, 24689)]