19691984

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5569}}^1$

素因数の和:5607

約数の個数: 40

約数和(自身を含む): 43512840

約数和(自身を除く): 23820856

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5569, 11138, 22276, 44552, 72397, 89104, 94673, 144794, 189346, 289588, 378692, 579176, 757384, 1158352, 1230749, 1514768, 2461498, 4922996, 9845992, 19691984]

約数ペア:

[(1, 19691984), (2, 9845992), (4, 4922996), (8, 2461498), (13, 1514768), (16, 1230749), (17, 1158352), (26, 757384), (34, 579176), (52, 378692), (68, 289588), (104, 189346), (136, 144794), (208, 94673), (221, 89104), (272, 72397), (442, 44552), (884, 22276), (1768, 11138), (3536, 5569)]