65777920

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:160

約数の個数: 144

約数和(自身を含む): 175129920

約数和(自身を除く): 109352000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 59, 64, 65, 67, 80, 104, 118, 128, 130, 134, 160, 208, 236, 256, 260, 268, 295, 320, 335, 416, 472, 520, 536, 590, 640, 670, 767, 832, 871, 944, 1040, 1072, 1180, 1280, 1340, 1534, 1664, 1742, 1888, 2080, 2144, 2360, 2680, 3068, 3328, 3484, 3776, 3835, 3953, 4160, 4288, 4355, 4720, 5360, 6136, 6968, 7552, 7670, 7906, 8320, 8576, 8710, 9440, 10720, 12272, 13936, 15104, 15340, 15812, 16640, 17152, 17420, 18880, 19765, 21440, 24544, 27872, 30680, 31624, 34840, 37760, 39530, 42880, 49088, 51389, 55744, 61360, 63248, 69680, 75520, 79060, 85760, 98176, 102778, 111488, 122720, 126496, 139360, 158120, 196352, 205556, 222976, 245440, 252992, 256945, 278720, 316240, 411112, 490880, 505984, 513890, 557440, 632480, 822224, 981760, 1011968, 1027780, 1114880, 1264960, 1644448, 2055560, 2529920, 3288896, 4111120, 5059840, 6577792, 8222240, 13155584, 16444480, 32888960, 65777920]

約数ペア:

[(1, 65777920), (2, 32888960), (4, 16444480), (5, 13155584), (8, 8222240), (10, 6577792), (13, 5059840), (16, 4111120), (20, 3288896), (26, 2529920), (32, 2055560), (40, 1644448), (52, 1264960), (59, 1114880), (64, 1027780), (65, 1011968), (67, 981760), (80, 822224), (104, 632480), (118, 557440), (128, 513890), (130, 505984), (134, 490880), (160, 411112), (208, 316240), (236, 278720), (256, 256945), (260, 252992), (268, 245440), (295, 222976), (320, 205556), (335, 196352), (416, 158120), (472, 139360), (520, 126496), (536, 122720), (590, 111488), (640, 102778), (670, 98176), (767, 85760), (832, 79060), (871, 75520), (944, 69680), (1040, 63248), (1072, 61360), (1180, 55744), (1280, 51389), (1340, 49088), (1534, 42880), (1664, 39530), (1742, 37760), (1888, 34840), (2080, 31624), (2144, 30680), (2360, 27872), (2680, 24544), (3068, 21440), (3328, 19765), (3484, 18880), (3776, 17420), (3835, 17152), (3953, 16640), (4160, 15812), (4288, 15340), (4355, 15104), (4720, 13936), (5360, 12272), (6136, 10720), (6968, 9440), (7552, 8710), (7670, 8576), (7906, 8320)]