81999160

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{120587}}^1$

素因数の和:120615

約数の個数: 32

約数和(自身を含む): 195352560

約数和(自身を除く): 113353400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 120587, 241174, 482348, 602935, 964696, 1205870, 2049979, 2411740, 4099958, 4823480, 8199916, 10249895, 16399832, 20499790, 40999580, 81999160]

約数ペア:

[(1, 81999160), (2, 40999580), (4, 20499790), (5, 16399832), (8, 10249895), (10, 8199916), (17, 4823480), (20, 4099958), (34, 2411740), (40, 2049979), (68, 1205870), (85, 964696), (136, 602935), (170, 482348), (340, 241174), (680, 120587)]