21129306055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{72253}}^1$

素因数の和:72691

約数の個数: 32

約数和(自身を含む): 29861133120

約数和(自身を除く): 8731827065

約数列:

[1, 5, 11, 13, 55, 65, 143, 409, 715, 2045, 4499, 5317, 22495, 26585, 58487, 72253, 292435, 361265, 794783, 939289, 3973915, 4696445, 10332179, 29551477, 51660895, 147757385, 325066247, 384169201, 1625331235, 1920846005, 4225861211, 21129306055]

約数ペア:

[(1, 21129306055), (5, 4225861211), (11, 1920846005), (13, 1625331235), (55, 384169201), (65, 325066247), (143, 147757385), (409, 51660895), (715, 29551477), (2045, 10332179), (4499, 4696445), (5317, 3973915), (22495, 939289), (26585, 794783), (58487, 361265), (72253, 292435)]