21723387

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 12491013

約数列:

[1, 3, 7, 21, 59, 89, 177, 197, 267, 413, 591, 623, 1239, 1379, 1869, 4137, 5251, 11623, 15753, 17533, 34869, 36757, 52599, 81361, 110271, 122731, 244083, 368193, 1034447, 3103341, 7241129, 21723387]

約数ペア:

[(1, 21723387), (3, 7241129), (7, 3103341), (21, 1034447), (59, 368193), (89, 244083), (177, 122731), (197, 110271), (267, 81361), (413, 52599), (591, 36757), (623, 34869), (1239, 17533), (1379, 15753), (1869, 11623), (4137, 5251)]