8656180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{197}}^1$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 19792080

約数和(自身を除く): 11135900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 197, 260, 338, 394, 676, 788, 845, 985, 1690, 1970, 2197, 2561, 3380, 3940, 4394, 5122, 8788, 10244, 10985, 12805, 21970, 25610, 33293, 43940, 51220, 66586, 133172, 166465, 332930, 432809, 665860, 865618, 1731236, 2164045, 4328090, 8656180]

約数ペア:

[(1, 8656180), (2, 4328090), (4, 2164045), (5, 1731236), (10, 865618), (13, 665860), (20, 432809), (26, 332930), (52, 166465), (65, 133172), (130, 66586), (169, 51220), (197, 43940), (260, 33293), (338, 25610), (394, 21970), (676, 12805), (788, 10985), (845, 10244), (985, 8788), (1690, 5122), (1970, 4394), (2197, 3940), (2561, 3380)]