21155970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64109}}^1$

素因数の和:64130

約数の個数: 32

約数和(自身を含む): 55391040

約数和(自身を除く): 34235070

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 330, 64109, 128218, 192327, 320545, 384654, 641090, 705199, 961635, 1410398, 1923270, 2115597, 3525995, 4231194, 7051990, 10577985, 21155970]

約数ペア:

[(1, 21155970), (2, 10577985), (3, 7051990), (5, 4231194), (6, 3525995), (10, 2115597), (11, 1923270), (15, 1410398), (22, 961635), (30, 705199), (33, 641090), (55, 384654), (66, 320545), (110, 192327), (165, 128218), (330, 64109)]