21476917

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 28514304

約数和(自身を除く): 7037387

約数列:

[1, 7, 11, 23, 67, 77, 161, 181, 253, 469, 737, 1267, 1541, 1771, 1991, 4163, 5159, 10787, 12127, 13937, 16951, 29141, 45793, 84889, 118657, 133397, 278921, 320551, 933779, 1952447, 3068131, 21476917]

約数ペア:

[(1, 21476917), (7, 3068131), (11, 1952447), (23, 933779), (67, 320551), (77, 278921), (161, 133397), (181, 118657), (253, 84889), (469, 45793), (737, 29141), (1267, 16951), (1541, 13937), (1771, 12127), (1991, 10787), (4163, 5159)]