20403188

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 41065920

約数和(自身を除く): 20662732

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 107, 193, 214, 247, 386, 428, 494, 772, 988, 1391, 2033, 2509, 2782, 3667, 4066, 5018, 5564, 7334, 8132, 10036, 14668, 20651, 26429, 41302, 47671, 52858, 82604, 95342, 105716, 190684, 268463, 392369, 536926, 784738, 1073852, 1569476, 5100797, 10201594, 20403188]

約数ペア:

[(1, 20403188), (2, 10201594), (4, 5100797), (13, 1569476), (19, 1073852), (26, 784738), (38, 536926), (52, 392369), (76, 268463), (107, 190684), (193, 105716), (214, 95342), (247, 82604), (386, 52858), (428, 47671), (494, 41302), (772, 26429), (988, 20651), (1391, 14668), (2033, 10036), (2509, 8132), (2782, 7334), (3667, 5564), (4066, 5018)]