21748552

素因数分解:

$2^3\times 7^2\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 47965500

約数和(自身を除く): 26216948

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 109, 196, 218, 392, 436, 509, 763, 872, 1018, 1526, 2036, 3052, 3563, 4072, 5341, 6104, 7126, 10682, 14252, 21364, 24941, 28504, 42728, 49882, 55481, 99764, 110962, 199528, 221924, 388367, 443848, 776734, 1553468, 2718569, 3106936, 5437138, 10874276, 21748552]

約数ペア:

[(1, 21748552), (2, 10874276), (4, 5437138), (7, 3106936), (8, 2718569), (14, 1553468), (28, 776734), (49, 443848), (56, 388367), (98, 221924), (109, 199528), (196, 110962), (218, 99764), (392, 55481), (436, 49882), (509, 42728), (763, 28504), (872, 24941), (1018, 21364), (1526, 14252), (2036, 10682), (3052, 7126), (3563, 6104), (4072, 5341)]