20958777

素因数分解:

$3^3\times 7^1\times {\mathrm{173}}^1\times {\mathrm{641}}^1$

素因数の和:830

約数の個数: 32

約数和(自身を含む): 35746560

約数和(自身を除く): 14787783

約数列:

[1, 3, 7, 9, 21, 27, 63, 173, 189, 519, 641, 1211, 1557, 1923, 3633, 4487, 4671, 5769, 10899, 13461, 17307, 32697, 40383, 110893, 121149, 332679, 776251, 998037, 2328753, 2994111, 6986259, 20958777]

約数ペア:

[(1, 20958777), (3, 6986259), (7, 2994111), (9, 2328753), (21, 998037), (27, 776251), (63, 332679), (173, 121149), (189, 110893), (519, 40383), (641, 32697), (1211, 17307), (1557, 13461), (1923, 10899), (3633, 5769), (4487, 4671)]