21953725

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{283}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 28524960

約数和(自身を除く): 6571235

約数列:

[1, 5, 25, 29, 107, 145, 283, 535, 725, 1415, 2675, 3103, 7075, 8207, 15515, 30281, 41035, 77575, 151405, 205175, 757025, 878149, 4390745, 21953725]

約数ペア:

[(1, 21953725), (5, 4390745), (25, 878149), (29, 757025), (107, 205175), (145, 151405), (283, 77575), (535, 41035), (725, 30281), (1415, 15515), (2675, 8207), (3103, 7075)]