81738380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{12653}}^1$

素因数の和:12698

約数の個数: 48

約数和(自身を含む): 191328480

約数和(自身を除く): 109590100

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 6460, 12653, 25306, 50612, 63265, 126530, 215101, 240407, 253060, 430202, 480814, 860404, 961628, 1075505, 1202035, 2151010, 2404070, 4086919, 4302020, 4808140, 8173838, 16347676, 20434595, 40869190, 81738380]

約数ペア:

[(1, 81738380), (2, 40869190), (4, 20434595), (5, 16347676), (10, 8173838), (17, 4808140), (19, 4302020), (20, 4086919), (34, 2404070), (38, 2151010), (68, 1202035), (76, 1075505), (85, 961628), (95, 860404), (170, 480814), (190, 430202), (323, 253060), (340, 240407), (380, 215101), (646, 126530), (1292, 63265), (1615, 50612), (3230, 25306), (6460, 12653)]