121521920

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:210

約数の個数: 144

約数和(自身を含む): 321071520

約数和(自身を除く): 199549600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 67, 80, 104, 109, 128, 130, 134, 160, 208, 218, 256, 260, 268, 320, 335, 416, 436, 520, 536, 545, 640, 670, 832, 871, 872, 1040, 1072, 1090, 1280, 1340, 1417, 1664, 1742, 1744, 2080, 2144, 2180, 2680, 2834, 3328, 3484, 3488, 4160, 4288, 4355, 4360, 5360, 5668, 6968, 6976, 7085, 7303, 8320, 8576, 8710, 8720, 10720, 11336, 13936, 13952, 14170, 14606, 16640, 17152, 17420, 17440, 21440, 22672, 27872, 27904, 28340, 29212, 34840, 34880, 36515, 42880, 45344, 55744, 56680, 58424, 69680, 69760, 73030, 85760, 90688, 94939, 111488, 113360, 116848, 139360, 139520, 146060, 181376, 189878, 222976, 226720, 233696, 278720, 292120, 362752, 379756, 453440, 467392, 474695, 557440, 584240, 759512, 906880, 934784, 949390, 1114880, 1168480, 1519024, 1813760, 1869568, 1898780, 2336960, 3038048, 3797560, 4673920, 6076096, 7595120, 9347840, 12152192, 15190240, 24304384, 30380480, 60760960, 121521920]

約数ペア:

[(1, 121521920), (2, 60760960), (4, 30380480), (5, 24304384), (8, 15190240), (10, 12152192), (13, 9347840), (16, 7595120), (20, 6076096), (26, 4673920), (32, 3797560), (40, 3038048), (52, 2336960), (64, 1898780), (65, 1869568), (67, 1813760), (80, 1519024), (104, 1168480), (109, 1114880), (128, 949390), (130, 934784), (134, 906880), (160, 759512), (208, 584240), (218, 557440), (256, 474695), (260, 467392), (268, 453440), (320, 379756), (335, 362752), (416, 292120), (436, 278720), (520, 233696), (536, 226720), (545, 222976), (640, 189878), (670, 181376), (832, 146060), (871, 139520), (872, 139360), (1040, 116848), (1072, 113360), (1090, 111488), (1280, 94939), (1340, 90688), (1417, 85760), (1664, 73030), (1742, 69760), (1744, 69680), (2080, 58424), (2144, 56680), (2180, 55744), (2680, 45344), (2834, 42880), (3328, 36515), (3484, 34880), (3488, 34840), (4160, 29212), (4288, 28340), (4355, 27904), (4360, 27872), (5360, 22672), (5668, 21440), (6968, 17440), (6976, 17420), (7085, 17152), (7303, 16640), (8320, 14606), (8576, 14170), (8710, 13952), (8720, 13936), (10720, 11336)]