21571990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{2927}}^1$

素因数の和:3012

約数の個数: 32

約数和(自身を含む): 43006464

約数和(自身を除く): 21434474

約数列:

[1, 2, 5, 10, 11, 22, 55, 67, 110, 134, 335, 670, 737, 1474, 2927, 3685, 5854, 7370, 14635, 29270, 32197, 64394, 160985, 196109, 321970, 392218, 980545, 1961090, 2157199, 4314398, 10785995, 21571990]

約数ペア:

[(1, 21571990), (2, 10785995), (5, 4314398), (10, 2157199), (11, 1961090), (22, 980545), (55, 392218), (67, 321970), (110, 196109), (134, 160985), (335, 64394), (670, 32197), (737, 29270), (1474, 14635), (2927, 7370), (3685, 5854)]