19771881

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 29272320

約数和(自身を除く): 9500439

約数列:

[1, 3, 23, 29, 41, 69, 87, 123, 241, 667, 723, 943, 1189, 2001, 2829, 3567, 5543, 6989, 9881, 16629, 20967, 27347, 29643, 82041, 160747, 227263, 286549, 482241, 681789, 859647, 6590627, 19771881]

約数ペア:

[(1, 19771881), (3, 6590627), (23, 859647), (29, 681789), (41, 482241), (69, 286549), (87, 227263), (123, 160747), (241, 82041), (667, 29643), (723, 27347), (943, 20967), (1189, 16629), (2001, 9881), (2829, 6989), (3567, 5543)]