208877980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{3769}}^1$

素因数の和:3958

約数の個数: 48

約数和(自身を含む): 467419680

約数和(自身を除く): 258541700

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 163, 170, 326, 340, 652, 815, 1630, 2771, 3260, 3769, 5542, 7538, 11084, 13855, 15076, 18845, 27710, 37690, 55420, 64073, 75380, 128146, 256292, 320365, 614347, 640730, 1228694, 1281460, 2457388, 3071735, 6143470, 10443899, 12286940, 20887798, 41775596, 52219495, 104438990, 208877980]

約数ペア:

[(1, 208877980), (2, 104438990), (4, 52219495), (5, 41775596), (10, 20887798), (17, 12286940), (20, 10443899), (34, 6143470), (68, 3071735), (85, 2457388), (163, 1281460), (170, 1228694), (326, 640730), (340, 614347), (652, 320365), (815, 256292), (1630, 128146), (2771, 75380), (3260, 64073), (3769, 55420), (5542, 37690), (7538, 27710), (11084, 18845), (13855, 15076)]