21020904

素因数分解:

$2^3\times 3^3\times {\mathrm{307}}^1\times {\mathrm{317}}^1$

素因数の和:639

約数の個数: 64

約数和(自身を含む): 58766400

約数和(自身を除く): 37745496

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 307, 317, 614, 634, 921, 951, 1228, 1268, 1842, 1902, 2456, 2536, 2763, 2853, 3684, 3804, 5526, 5706, 7368, 7608, 8289, 8559, 11052, 11412, 16578, 17118, 22104, 22824, 33156, 34236, 66312, 68472, 97319, 194638, 291957, 389276, 583914, 778552, 875871, 1167828, 1751742, 2335656, 2627613, 3503484, 5255226, 7006968, 10510452, 21020904]

約数ペア:

[(1, 21020904), (2, 10510452), (3, 7006968), (4, 5255226), (6, 3503484), (8, 2627613), (9, 2335656), (12, 1751742), (18, 1167828), (24, 875871), (27, 778552), (36, 583914), (54, 389276), (72, 291957), (108, 194638), (216, 97319), (307, 68472), (317, 66312), (614, 34236), (634, 33156), (921, 22824), (951, 22104), (1228, 17118), (1268, 16578), (1842, 11412), (1902, 11052), (2456, 8559), (2536, 8289), (2763, 7608), (2853, 7368), (3684, 5706), (3804, 5526)]