20137910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:333

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 22440010

約数列:

[1, 2, 5, 10, 13, 19, 26, 31, 38, 62, 65, 95, 130, 155, 190, 247, 263, 310, 403, 494, 526, 589, 806, 1178, 1235, 1315, 2015, 2470, 2630, 2945, 3419, 4030, 4997, 5890, 6838, 7657, 8153, 9994, 15314, 16306, 17095, 24985, 34190, 38285, 40765, 49970, 64961, 76570, 81530, 105989, 129922, 154907, 211978, 309814, 324805, 529945, 649610, 774535, 1059890, 1549070, 2013791, 4027582, 10068955, 20137910]

約数ペア:

[(1, 20137910), (2, 10068955), (5, 4027582), (10, 2013791), (13, 1549070), (19, 1059890), (26, 774535), (31, 649610), (38, 529945), (62, 324805), (65, 309814), (95, 211978), (130, 154907), (155, 129922), (190, 105989), (247, 81530), (263, 76570), (310, 64961), (403, 49970), (494, 40765), (526, 38285), (589, 34190), (806, 24985), (1178, 17095), (1235, 16306), (1315, 15314), (2015, 9994), (2470, 8153), (2630, 7657), (2945, 6838), (3419, 5890), (4030, 4997)]