2487980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 5854464

約数和(自身を除く): 3366484

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 263, 430, 473, 526, 860, 946, 1052, 1315, 1892, 2365, 2630, 2893, 4730, 5260, 5786, 9460, 11309, 11572, 14465, 22618, 28930, 45236, 56545, 57860, 113090, 124399, 226180, 248798, 497596, 621995, 1243990, 2487980]

約数ペア:

[(1, 2487980), (2, 1243990), (4, 621995), (5, 497596), (10, 248798), (11, 226180), (20, 124399), (22, 113090), (43, 57860), (44, 56545), (55, 45236), (86, 28930), (110, 22618), (172, 14465), (215, 11572), (220, 11309), (263, 9460), (430, 5786), (473, 5260), (526, 4730), (860, 2893), (946, 2630), (1052, 2365), (1315, 1892)]