21067977

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{823}}^1$

素因数の和:909

約数の個数: 32

約数和(自身を含む): 34172928

約数和(自身を除く): 13104951

約数列:

[1, 3, 7, 21, 23, 53, 69, 159, 161, 371, 483, 823, 1113, 1219, 2469, 3657, 5761, 8533, 17283, 18929, 25599, 43619, 56787, 130857, 132503, 305333, 397509, 915999, 1003237, 3009711, 7022659, 21067977]

約数ペア:

[(1, 21067977), (3, 7022659), (7, 3009711), (21, 1003237), (23, 915999), (53, 397509), (69, 305333), (159, 132503), (161, 130857), (371, 56787), (483, 43619), (823, 25599), (1113, 18929), (1219, 17283), (2469, 8533), (3657, 5761)]