20980648

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{3011}}^1$

素因数の和:3097

約数の個数: 32

約数和(自身を含む): 43011360

約数和(自身を除く): 22030712

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 3011, 3484, 6022, 6968, 12044, 24088, 39143, 78286, 156572, 201737, 313144, 403474, 806948, 1613896, 2622581, 5245162, 10490324, 20980648]

約数ペア:

[(1, 20980648), (2, 10490324), (4, 5245162), (8, 2622581), (13, 1613896), (26, 806948), (52, 403474), (67, 313144), (104, 201737), (134, 156572), (268, 78286), (536, 39143), (871, 24088), (1742, 12044), (3011, 6968), (3484, 6022)]