21565232

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{521}}^1$

素因数の和:741

約数の個数: 40

約数和(自身を含む): 45309600

約数和(自身を除く): 23744368

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 199, 208, 398, 521, 796, 1042, 1592, 2084, 2587, 3184, 4168, 5174, 6773, 8336, 10348, 13546, 20696, 27092, 41392, 54184, 103679, 108368, 207358, 414716, 829432, 1347827, 1658864, 2695654, 5391308, 10782616, 21565232]

約数ペア:

[(1, 21565232), (2, 10782616), (4, 5391308), (8, 2695654), (13, 1658864), (16, 1347827), (26, 829432), (52, 414716), (104, 207358), (199, 108368), (208, 103679), (398, 54184), (521, 41392), (796, 27092), (1042, 20696), (1592, 13546), (2084, 10348), (2587, 8336), (3184, 6773), (4168, 5174)]