21981333

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{223}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 33546240

約数和(自身を除く): 11564907

約数列:

[1, 3, 11, 29, 33, 87, 103, 223, 309, 319, 669, 957, 1133, 2453, 2987, 3399, 6467, 7359, 8961, 19401, 22969, 32857, 68907, 71137, 98571, 213411, 252659, 666101, 757977, 1998303, 7327111, 21981333]

約数ペア:

[(1, 21981333), (3, 7327111), (11, 1998303), (29, 757977), (33, 666101), (87, 252659), (103, 213411), (223, 98571), (309, 71137), (319, 68907), (669, 32857), (957, 22969), (1133, 19401), (2453, 8961), (2987, 7359), (3399, 6467)]