21097819659

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1259}}^1\times {\mathrm{41999}}^1$

素因数の和:43287

約数の個数: 32

約数和(自身を含む): 33868800000

約数和(自身を除く): 12770980341

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 1259, 3777, 8813, 23921, 26439, 41999, 71763, 125997, 167447, 293993, 502341, 797981, 881979, 2393943, 5585867, 16757601, 52876741, 158630223, 370137187, 1004658079, 1110411561, 3013974237, 7032606553, 21097819659]

約数ペア:

[(1, 21097819659), (3, 7032606553), (7, 3013974237), (19, 1110411561), (21, 1004658079), (57, 370137187), (133, 158630223), (399, 52876741), (1259, 16757601), (3777, 5585867), (8813, 2393943), (23921, 881979), (26439, 797981), (41999, 502341), (71763, 293993), (125997, 167447)]