28257580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{433}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 64308384

約数和(自身を除く): 36050804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 251, 260, 433, 502, 866, 1004, 1255, 1732, 2165, 2510, 3263, 4330, 5020, 5629, 6526, 8660, 11258, 13052, 16315, 22516, 28145, 32630, 56290, 65260, 108683, 112580, 217366, 434732, 543415, 1086830, 1412879, 2173660, 2825758, 5651516, 7064395, 14128790, 28257580]

約数ペア:

[(1, 28257580), (2, 14128790), (4, 7064395), (5, 5651516), (10, 2825758), (13, 2173660), (20, 1412879), (26, 1086830), (52, 543415), (65, 434732), (130, 217366), (251, 112580), (260, 108683), (433, 65260), (502, 56290), (866, 32630), (1004, 28145), (1255, 22516), (1732, 16315), (2165, 13052), (2510, 11258), (3263, 8660), (4330, 6526), (5020, 5629)]