20657584

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{439}}^1$

素因数の和:637

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 22062896

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 173, 272, 346, 439, 692, 878, 1384, 1756, 2768, 2941, 3512, 5882, 7024, 7463, 11764, 14926, 23528, 29852, 47056, 59704, 75947, 119408, 151894, 303788, 607576, 1215152, 1291099, 2582198, 5164396, 10328792, 20657584]

約数ペア:

[(1, 20657584), (2, 10328792), (4, 5164396), (8, 2582198), (16, 1291099), (17, 1215152), (34, 607576), (68, 303788), (136, 151894), (173, 119408), (272, 75947), (346, 59704), (439, 47056), (692, 29852), (878, 23528), (1384, 14926), (1756, 11764), (2768, 7463), (2941, 7024), (3512, 5882)]