21421191

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{6427}}^1$

素因数の和:6542

約数の個数: 16

約数和(自身を含む): 31471488

約数和(自身を除く): 10050297

約数列:

[1, 3, 11, 33, 101, 303, 1111, 3333, 6427, 19281, 70697, 212091, 649127, 1947381, 7140397, 21421191]

約数ペア:

[(1, 21421191), (3, 7140397), (11, 1947381), (33, 649127), (101, 212091), (303, 70697), (1111, 19281), (3333, 6427)]