18697840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 50228928

約数和(自身を除く): 31531088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 173, 193, 280, 346, 386, 560, 692, 772, 865, 965, 1211, 1351, 1384, 1544, 1730, 1930, 2422, 2702, 2768, 3088, 3460, 3860, 4844, 5404, 6055, 6755, 6920, 7720, 9688, 10808, 12110, 13510, 13840, 15440, 19376, 21616, 24220, 27020, 33389, 48440, 54040, 66778, 96880, 108080, 133556, 166945, 233723, 267112, 333890, 467446, 534224, 667780, 934892, 1168615, 1335560, 1869784, 2337230, 2671120, 3739568, 4674460, 9348920, 18697840]

約数ペア:

[(1, 18697840), (2, 9348920), (4, 4674460), (5, 3739568), (7, 2671120), (8, 2337230), (10, 1869784), (14, 1335560), (16, 1168615), (20, 934892), (28, 667780), (35, 534224), (40, 467446), (56, 333890), (70, 267112), (80, 233723), (112, 166945), (140, 133556), (173, 108080), (193, 96880), (280, 66778), (346, 54040), (386, 48440), (560, 33389), (692, 27020), (772, 24220), (865, 21616), (965, 19376), (1211, 15440), (1351, 13840), (1384, 13510), (1544, 12110), (1730, 10808), (1930, 9688), (2422, 7720), (2702, 6920), (2768, 6755), (3088, 6055), (3460, 5404), (3860, 4844)]