20512986

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{643}}^1$

素因数の和:1070

約数の個数: 32

約数和(自身を含む): 44358720

約数和(自身を除く): 23845734

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 409, 643, 818, 1227, 1286, 1929, 2454, 3858, 5317, 8359, 10634, 15951, 16718, 25077, 31902, 50154, 262987, 525974, 788961, 1577922, 3418831, 6837662, 10256493, 20512986]

約数ペア:

[(1, 20512986), (2, 10256493), (3, 6837662), (6, 3418831), (13, 1577922), (26, 788961), (39, 525974), (78, 262987), (409, 50154), (643, 31902), (818, 25077), (1227, 16718), (1286, 15951), (1929, 10634), (2454, 8359), (3858, 5317)]