381571840

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{997}}^1$

素因数の和:1054

約数の個数: 144

約数和(自身を含む): 1028115648

約数和(自身を除く): 646543808

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 104, 115, 128, 130, 160, 184, 208, 230, 256, 260, 299, 320, 368, 416, 460, 520, 598, 640, 736, 832, 920, 997, 1040, 1196, 1280, 1472, 1495, 1664, 1840, 1994, 2080, 2392, 2944, 2990, 3328, 3680, 3988, 4160, 4784, 4985, 5888, 5980, 7360, 7976, 8320, 9568, 9970, 11960, 12961, 14720, 15952, 16640, 19136, 19940, 22931, 23920, 25922, 29440, 31904, 38272, 39880, 45862, 47840, 51844, 63808, 64805, 76544, 79760, 91724, 95680, 103688, 114655, 127616, 129610, 159520, 183448, 191360, 207376, 229310, 255232, 259220, 298103, 319040, 366896, 382720, 414752, 458620, 518440, 596206, 638080, 733792, 829504, 917240, 1036880, 1192412, 1276160, 1467584, 1490515, 1659008, 1834480, 2073760, 2384824, 2935168, 2981030, 3318016, 3668960, 4147520, 4769648, 5870336, 5962060, 7337920, 8295040, 9539296, 11924120, 14675840, 16590080, 19078592, 23848240, 29351680, 38157184, 47696480, 76314368, 95392960, 190785920, 381571840]

約数ペア:

[(1, 381571840), (2, 190785920), (4, 95392960), (5, 76314368), (8, 47696480), (10, 38157184), (13, 29351680), (16, 23848240), (20, 19078592), (23, 16590080), (26, 14675840), (32, 11924120), (40, 9539296), (46, 8295040), (52, 7337920), (64, 5962060), (65, 5870336), (80, 4769648), (92, 4147520), (104, 3668960), (115, 3318016), (128, 2981030), (130, 2935168), (160, 2384824), (184, 2073760), (208, 1834480), (230, 1659008), (256, 1490515), (260, 1467584), (299, 1276160), (320, 1192412), (368, 1036880), (416, 917240), (460, 829504), (520, 733792), (598, 638080), (640, 596206), (736, 518440), (832, 458620), (920, 414752), (997, 382720), (1040, 366896), (1196, 319040), (1280, 298103), (1472, 259220), (1495, 255232), (1664, 229310), (1840, 207376), (1994, 191360), (2080, 183448), (2392, 159520), (2944, 129610), (2990, 127616), (3328, 114655), (3680, 103688), (3988, 95680), (4160, 91724), (4784, 79760), (4985, 76544), (5888, 64805), (5980, 63808), (7360, 51844), (7976, 47840), (8320, 45862), (9568, 39880), (9970, 38272), (11960, 31904), (12961, 29440), (14720, 25922), (15952, 23920), (16640, 22931), (19136, 19940)]