123755720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:307

約数の個数: 128

約数和(自身を含む): 322375680

約数和(自身を除く): 198619960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 43, 44, 55, 62, 86, 88, 110, 124, 155, 172, 211, 215, 220, 248, 310, 341, 344, 422, 430, 440, 473, 620, 682, 844, 860, 946, 1055, 1240, 1333, 1364, 1688, 1705, 1720, 1892, 2110, 2321, 2365, 2666, 2728, 3410, 3784, 4220, 4642, 4730, 5332, 6541, 6665, 6820, 8440, 9073, 9284, 9460, 10664, 11605, 13082, 13330, 13640, 14663, 18146, 18568, 18920, 23210, 26164, 26660, 29326, 32705, 36292, 45365, 46420, 52328, 53320, 58652, 65410, 71951, 72584, 73315, 90730, 92840, 99803, 117304, 130820, 143902, 146630, 181460, 199606, 261640, 281263, 287804, 293260, 359755, 362920, 399212, 499015, 562526, 575608, 586520, 719510, 798424, 998030, 1125052, 1406315, 1439020, 1996060, 2250104, 2812630, 2878040, 3093893, 3992120, 5625260, 6187786, 11250520, 12375572, 15469465, 24751144, 30938930, 61877860, 123755720]

約数ペア:

[(1, 123755720), (2, 61877860), (4, 30938930), (5, 24751144), (8, 15469465), (10, 12375572), (11, 11250520), (20, 6187786), (22, 5625260), (31, 3992120), (40, 3093893), (43, 2878040), (44, 2812630), (55, 2250104), (62, 1996060), (86, 1439020), (88, 1406315), (110, 1125052), (124, 998030), (155, 798424), (172, 719510), (211, 586520), (215, 575608), (220, 562526), (248, 499015), (310, 399212), (341, 362920), (344, 359755), (422, 293260), (430, 287804), (440, 281263), (473, 261640), (620, 199606), (682, 181460), (844, 146630), (860, 143902), (946, 130820), (1055, 117304), (1240, 99803), (1333, 92840), (1364, 90730), (1688, 73315), (1705, 72584), (1720, 71951), (1892, 65410), (2110, 58652), (2321, 53320), (2365, 52328), (2666, 46420), (2728, 45365), (3410, 36292), (3784, 32705), (4220, 29326), (4642, 26660), (4730, 26164), (5332, 23210), (6541, 18920), (6665, 18568), (6820, 18146), (8440, 14663), (9073, 13640), (9284, 13330), (9460, 13082), (10664, 11605)]