15978215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{743}}^1$

素因数の和:799

約数の個数: 32

約数和(自身を含む): 23141376

約数和(自身を除く): 7163161

約数列:

[1, 5, 11, 17, 23, 55, 85, 115, 187, 253, 391, 743, 935, 1265, 1955, 3715, 4301, 8173, 12631, 17089, 21505, 40865, 63155, 85445, 138941, 187979, 290513, 694705, 939895, 1452565, 3195643, 15978215]

約数ペア:

[(1, 15978215), (5, 3195643), (11, 1452565), (17, 939895), (23, 694705), (55, 290513), (85, 187979), (115, 138941), (187, 85445), (253, 63155), (391, 40865), (743, 21505), (935, 17089), (1265, 12631), (1955, 8173), (3715, 4301)]