20480320

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:288

約数の個数: 112

約数和(自身を含む): 57351168

約数和(自身を除く): 36870848

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 56, 64, 70, 80, 82, 112, 140, 160, 164, 205, 223, 224, 280, 287, 320, 328, 410, 446, 448, 560, 574, 656, 820, 892, 1115, 1120, 1148, 1312, 1435, 1561, 1640, 1784, 2230, 2240, 2296, 2624, 2870, 3122, 3280, 3568, 4460, 4592, 5740, 6244, 6560, 7136, 7805, 8920, 9143, 9184, 11480, 12488, 13120, 14272, 15610, 17840, 18286, 18368, 22960, 24976, 31220, 35680, 36572, 45715, 45920, 49952, 62440, 64001, 71360, 73144, 91430, 91840, 99904, 124880, 128002, 146288, 182860, 249760, 256004, 292576, 320005, 365720, 499520, 512008, 585152, 640010, 731440, 1024016, 1280020, 1462880, 2048032, 2560040, 2925760, 4096064, 5120080, 10240160, 20480320]

約数ペア:

[(1, 20480320), (2, 10240160), (4, 5120080), (5, 4096064), (7, 2925760), (8, 2560040), (10, 2048032), (14, 1462880), (16, 1280020), (20, 1024016), (28, 731440), (32, 640010), (35, 585152), (40, 512008), (41, 499520), (56, 365720), (64, 320005), (70, 292576), (80, 256004), (82, 249760), (112, 182860), (140, 146288), (160, 128002), (164, 124880), (205, 99904), (223, 91840), (224, 91430), (280, 73144), (287, 71360), (320, 64001), (328, 62440), (410, 49952), (446, 45920), (448, 45715), (560, 36572), (574, 35680), (656, 31220), (820, 24976), (892, 22960), (1115, 18368), (1120, 18286), (1148, 17840), (1312, 15610), (1435, 14272), (1561, 13120), (1640, 12488), (1784, 11480), (2230, 9184), (2240, 9143), (2296, 8920), (2624, 7805), (2870, 7136), (3122, 6560), (3280, 6244), (3568, 5740), (4460, 4592)]