21064264

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{3023}}^1$

素因数の和:3109

約数の個数: 32

約数和(自身を含む): 43182720

約数和(自身を除く): 22118456

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 3023, 3484, 6046, 6968, 12092, 24184, 39299, 78598, 157196, 202541, 314392, 405082, 810164, 1620328, 2633033, 5266066, 10532132, 21064264]

約数ペア:

[(1, 21064264), (2, 10532132), (4, 5266066), (8, 2633033), (13, 1620328), (26, 810164), (52, 405082), (67, 314392), (104, 202541), (134, 157196), (268, 78598), (536, 39299), (871, 24184), (1742, 12092), (3023, 6968), (3484, 6046)]