80872220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28277}}^1$

素因数の和:28310

約数の個数: 48

約数和(自身を含む): 199529568

約数和(自身を除く): 118657348

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 28277, 56554, 113108, 141385, 282770, 311047, 367601, 565540, 622094, 735202, 1244188, 1470404, 1555235, 1838005, 3110470, 3676010, 4043611, 6220940, 7352020, 8087222, 16174444, 20218055, 40436110, 80872220]

約数ペア:

[(1, 80872220), (2, 40436110), (4, 20218055), (5, 16174444), (10, 8087222), (11, 7352020), (13, 6220940), (20, 4043611), (22, 3676010), (26, 3110470), (44, 1838005), (52, 1555235), (55, 1470404), (65, 1244188), (110, 735202), (130, 622094), (143, 565540), (220, 367601), (260, 311047), (286, 282770), (572, 141385), (715, 113108), (1430, 56554), (2860, 28277)]