21958951

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 28366848

約数和(自身を除く): 6407897

約数列:

[1, 7, 17, 23, 71, 113, 119, 161, 391, 497, 791, 1207, 1633, 1921, 2599, 2737, 8023, 8449, 11431, 13447, 18193, 27761, 44183, 56161, 136391, 184529, 194327, 309281, 954737, 1291703, 3136993, 21958951]

約数ペア:

[(1, 21958951), (7, 3136993), (17, 1291703), (23, 954737), (71, 309281), (113, 194327), (119, 184529), (161, 136391), (391, 56161), (497, 44183), (791, 27761), (1207, 18193), (1633, 13447), (1921, 11431), (2599, 8449), (2737, 8023)]