19391216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1759}}^1$

素因数の和:1833

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 21856144

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 208, 212, 424, 689, 848, 1378, 1759, 2756, 3518, 5512, 7036, 11024, 14072, 22867, 28144, 45734, 91468, 93227, 182936, 186454, 365872, 372908, 745816, 1211951, 1491632, 2423902, 4847804, 9695608, 19391216]

約数ペア:

[(1, 19391216), (2, 9695608), (4, 4847804), (8, 2423902), (13, 1491632), (16, 1211951), (26, 745816), (52, 372908), (53, 365872), (104, 186454), (106, 182936), (208, 93227), (212, 91468), (424, 45734), (689, 28144), (848, 22867), (1378, 14072), (1759, 11024), (2756, 7036), (3518, 5512)]