218655460

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{2749}}^1$

素因数の和:2896

約数の個数: 48

約数和(自身を含む): 475398000

約数和(自身を除く): 256742540

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 388, 410, 485, 820, 970, 1940, 2749, 3977, 5498, 7954, 10996, 13745, 15908, 19885, 27490, 39770, 54980, 79540, 112709, 225418, 266653, 450836, 533306, 563545, 1066612, 1127090, 1333265, 2254180, 2666530, 5333060, 10932773, 21865546, 43731092, 54663865, 109327730, 218655460]

約数ペア:

[(1, 218655460), (2, 109327730), (4, 54663865), (5, 43731092), (10, 21865546), (20, 10932773), (41, 5333060), (82, 2666530), (97, 2254180), (164, 1333265), (194, 1127090), (205, 1066612), (388, 563545), (410, 533306), (485, 450836), (820, 266653), (970, 225418), (1940, 112709), (2749, 79540), (3977, 54980), (5498, 39770), (7954, 27490), (10996, 19885), (13745, 15908)]