220197580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{443}}^1\times {\mathrm{857}}^1$

素因数の和:1338

約数の個数: 48

約数和(自身を含む): 479999520

約数和(自身を除く): 259801940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 443, 580, 857, 886, 1714, 1772, 2215, 3428, 4285, 4430, 8570, 8860, 12847, 17140, 24853, 25694, 49706, 51388, 64235, 99412, 124265, 128470, 248530, 256940, 379651, 497060, 759302, 1518604, 1898255, 3796510, 7593020, 11009879, 22019758, 44039516, 55049395, 110098790, 220197580]

約数ペア:

[(1, 220197580), (2, 110098790), (4, 55049395), (5, 44039516), (10, 22019758), (20, 11009879), (29, 7593020), (58, 3796510), (116, 1898255), (145, 1518604), (290, 759302), (443, 497060), (580, 379651), (857, 256940), (886, 248530), (1714, 128470), (1772, 124265), (2215, 99412), (3428, 64235), (4285, 51388), (4430, 49706), (8570, 25694), (8860, 24853), (12847, 17140)]