9998788

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 19958400

約数和(自身を除く): 9959612

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 71, 76, 109, 142, 218, 284, 323, 436, 646, 1207, 1292, 1349, 1853, 2071, 2414, 2698, 3706, 4142, 4828, 5396, 7412, 7739, 8284, 15478, 22933, 30956, 35207, 45866, 70414, 91732, 131563, 140828, 147041, 263126, 294082, 526252, 588164, 2499697, 4999394, 9998788]

約数ペア:

[(1, 9998788), (2, 4999394), (4, 2499697), (17, 588164), (19, 526252), (34, 294082), (38, 263126), (68, 147041), (71, 140828), (76, 131563), (109, 91732), (142, 70414), (218, 45866), (284, 35207), (323, 30956), (436, 22933), (646, 15478), (1207, 8284), (1292, 7739), (1349, 7412), (1853, 5396), (2071, 4828), (2414, 4142), (2698, 3706)]