208420940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{383}}^1$

素因数の和:448

約数の個数: 144

約数和(自身を含む): 566673408

約数和(自身を除く): 358252468

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 35, 46, 52, 65, 70, 91, 92, 115, 130, 140, 161, 169, 182, 230, 260, 299, 322, 338, 364, 383, 455, 460, 598, 644, 676, 766, 805, 845, 910, 1183, 1196, 1495, 1532, 1610, 1690, 1820, 1915, 2093, 2366, 2681, 2990, 3220, 3380, 3830, 3887, 4186, 4732, 4979, 5362, 5915, 5980, 7660, 7774, 8372, 8809, 9958, 10465, 10724, 11830, 13405, 15548, 17618, 19435, 19916, 20930, 23660, 24895, 26810, 27209, 34853, 35236, 38870, 41860, 44045, 49790, 53620, 54418, 61663, 64727, 69706, 77740, 88090, 99580, 108836, 114517, 123326, 129454, 136045, 139412, 174265, 176180, 229034, 246652, 258908, 272090, 308315, 323635, 348530, 453089, 458068, 544180, 572585, 616630, 647270, 697060, 801619, 906178, 1145170, 1233260, 1294540, 1488721, 1603238, 1812356, 2265445, 2290340, 2977442, 3206476, 4008095, 4530890, 5954884, 7443605, 8016190, 9061780, 10421047, 14887210, 16032380, 20842094, 29774420, 41684188, 52105235, 104210470, 208420940]

約数ペア:

[(1, 208420940), (2, 104210470), (4, 52105235), (5, 41684188), (7, 29774420), (10, 20842094), (13, 16032380), (14, 14887210), (20, 10421047), (23, 9061780), (26, 8016190), (28, 7443605), (35, 5954884), (46, 4530890), (52, 4008095), (65, 3206476), (70, 2977442), (91, 2290340), (92, 2265445), (115, 1812356), (130, 1603238), (140, 1488721), (161, 1294540), (169, 1233260), (182, 1145170), (230, 906178), (260, 801619), (299, 697060), (322, 647270), (338, 616630), (364, 572585), (383, 544180), (455, 458068), (460, 453089), (598, 348530), (644, 323635), (676, 308315), (766, 272090), (805, 258908), (845, 246652), (910, 229034), (1183, 176180), (1196, 174265), (1495, 139412), (1532, 136045), (1610, 129454), (1690, 123326), (1820, 114517), (1915, 108836), (2093, 99580), (2366, 88090), (2681, 77740), (2990, 69706), (3220, 64727), (3380, 61663), (3830, 54418), (3887, 53620), (4186, 49790), (4732, 44045), (4979, 41860), (5362, 38870), (5915, 35236), (5980, 34853), (7660, 27209), (7774, 26810), (8372, 24895), (8809, 23660), (9958, 20930), (10465, 19916), (10724, 19435), (11830, 17618), (13405, 15548)]