394759480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{240707}}^1$

素因数の和:240759

約数の個数: 32

約数和(自身を含む): 909876240

約数和(自身を除く): 515116760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 240707, 481414, 962828, 1203535, 1925656, 2407070, 4814140, 9628280, 9868987, 19737974, 39475948, 49344935, 78951896, 98689870, 197379740, 394759480]

約数ペア:

[(1, 394759480), (2, 197379740), (4, 98689870), (5, 78951896), (8, 49344935), (10, 39475948), (20, 19737974), (40, 9868987), (41, 9628280), (82, 4814140), (164, 2407070), (205, 1925656), (328, 1203535), (410, 962828), (820, 481414), (1640, 240707)]