25311980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{683}}^1$

素因数の和:818

約数の個数: 48

約数和(自身を含む): 56881440

約数和(自身を除く): 31569460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 109, 170, 218, 340, 436, 545, 683, 1090, 1366, 1853, 2180, 2732, 3415, 3706, 6830, 7412, 9265, 11611, 13660, 18530, 23222, 37060, 46444, 58055, 74447, 116110, 148894, 232220, 297788, 372235, 744470, 1265599, 1488940, 2531198, 5062396, 6327995, 12655990, 25311980]

約数ペア:

[(1, 25311980), (2, 12655990), (4, 6327995), (5, 5062396), (10, 2531198), (17, 1488940), (20, 1265599), (34, 744470), (68, 372235), (85, 297788), (109, 232220), (170, 148894), (218, 116110), (340, 74447), (436, 58055), (545, 46444), (683, 37060), (1090, 23222), (1366, 18530), (1853, 13660), (2180, 11611), (2732, 9265), (3415, 7412), (3706, 6830)]