20484568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{457}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 41549760

約数和(自身を除く): 21065192

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 431, 457, 862, 914, 1724, 1828, 3448, 3656, 5603, 5941, 11206, 11882, 22412, 23764, 44824, 47528, 196967, 393934, 787868, 1575736, 2560571, 5121142, 10242284, 20484568]

約数ペア:

[(1, 20484568), (2, 10242284), (4, 5121142), (8, 2560571), (13, 1575736), (26, 787868), (52, 393934), (104, 196967), (431, 47528), (457, 44824), (862, 23764), (914, 22412), (1724, 11882), (1828, 11206), (3448, 5941), (3656, 5603)]