78340480

素因数分解:

$2^7\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1123}}^1$

素因数の和:1251

約数の個数: 64

約数和(自身を含む): 189169200

約数和(自身を除く): 110828720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 320, 436, 545, 640, 872, 1090, 1123, 1744, 2180, 2246, 3488, 4360, 4492, 5615, 6976, 8720, 8984, 11230, 13952, 17440, 17968, 22460, 34880, 35936, 44920, 69760, 71872, 89840, 122407, 143744, 179680, 244814, 359360, 489628, 612035, 718720, 979256, 1224070, 1958512, 2448140, 3917024, 4896280, 7834048, 9792560, 15668096, 19585120, 39170240, 78340480]

約数ペア:

[(1, 78340480), (2, 39170240), (4, 19585120), (5, 15668096), (8, 9792560), (10, 7834048), (16, 4896280), (20, 3917024), (32, 2448140), (40, 1958512), (64, 1224070), (80, 979256), (109, 718720), (128, 612035), (160, 489628), (218, 359360), (320, 244814), (436, 179680), (545, 143744), (640, 122407), (872, 89840), (1090, 71872), (1123, 69760), (1744, 44920), (2180, 35936), (2246, 34880), (3488, 22460), (4360, 17968), (4492, 17440), (5615, 13952), (6976, 11230), (8720, 8984)]