20971678

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1889}}^1$

素因数の和:1972

約数の個数: 32

約数和(自身を含む): 39372480

約数和(自身を除く): 18400802

約数列:

[1, 2, 7, 13, 14, 26, 61, 91, 122, 182, 427, 793, 854, 1586, 1889, 3778, 5551, 11102, 13223, 24557, 26446, 49114, 115229, 171899, 230458, 343798, 806603, 1497977, 1613206, 2995954, 10485839, 20971678]

約数ペア:

[(1, 20971678), (2, 10485839), (7, 2995954), (13, 1613206), (14, 1497977), (26, 806603), (61, 343798), (91, 230458), (122, 171899), (182, 115229), (427, 49114), (793, 26446), (854, 24557), (1586, 13223), (1889, 11102), (3778, 5551)]