21352390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2741}}^1$

素因数の和:2808

約数の個数: 32

約数和(自身を含む): 41459040

約数和(自身を除く): 20106650

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2741, 3895, 5482, 7790, 13705, 27410, 52079, 104158, 112381, 224762, 260395, 520790, 561905, 1123810, 2135239, 4270478, 10676195, 21352390]

約数ペア:

[(1, 21352390), (2, 10676195), (5, 4270478), (10, 2135239), (19, 1123810), (38, 561905), (41, 520790), (82, 260395), (95, 224762), (190, 112381), (205, 104158), (410, 52079), (779, 27410), (1558, 13705), (2741, 7790), (3895, 5482)]