128443580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1\times {\mathrm{641}}^1$

素因数の和:926

約数の個数: 48

約数和(自身を含む): 277621344

約数和(自身を除く): 149177764

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 233, 430, 466, 641, 860, 932, 1165, 1282, 2330, 2564, 3205, 4660, 6410, 10019, 12820, 20038, 27563, 40076, 50095, 55126, 100190, 110252, 137815, 149353, 200380, 275630, 298706, 551260, 597412, 746765, 1493530, 2987060, 6422179, 12844358, 25688716, 32110895, 64221790, 128443580]

約数ペア:

[(1, 128443580), (2, 64221790), (4, 32110895), (5, 25688716), (10, 12844358), (20, 6422179), (43, 2987060), (86, 1493530), (172, 746765), (215, 597412), (233, 551260), (430, 298706), (466, 275630), (641, 200380), (860, 149353), (932, 137815), (1165, 110252), (1282, 100190), (2330, 55126), (2564, 50095), (3205, 40076), (4660, 27563), (6410, 20038), (10019, 12820)]