258889744

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{20771}}^1$

素因数の和:20839

約数の個数: 40

約数和(自身を含む): 540902880

約数和(自身を除く): 282013136

約数列:

[1, 2, 4, 8, 16, 19, 38, 41, 76, 82, 152, 164, 304, 328, 656, 779, 1558, 3116, 6232, 12464, 20771, 41542, 83084, 166168, 332336, 394649, 789298, 851611, 1578596, 1703222, 3157192, 3406444, 6314384, 6812888, 13625776, 16180609, 32361218, 64722436, 129444872, 258889744]

約数ペア:

[(1, 258889744), (2, 129444872), (4, 64722436), (8, 32361218), (16, 16180609), (19, 13625776), (38, 6812888), (41, 6314384), (76, 3406444), (82, 3157192), (152, 1703222), (164, 1578596), (304, 851611), (328, 789298), (656, 394649), (779, 332336), (1558, 166168), (3116, 83084), (6232, 41542), (12464, 20771)]