21399968

素因数分解:

$2^5\times {\mathrm{71}}^1\times {\mathrm{9419}}^1$

素因数の和:9500

約数の個数: 24

約数和(自身を含む): 42729120

約数和(自身を除く): 21329152

約数列:

[1, 2, 4, 8, 16, 32, 71, 142, 284, 568, 1136, 2272, 9419, 18838, 37676, 75352, 150704, 301408, 668749, 1337498, 2674996, 5349992, 10699984, 21399968]

約数ペア:

[(1, 21399968), (2, 10699984), (4, 5349992), (8, 2674996), (16, 1337498), (32, 668749), (71, 301408), (142, 150704), (284, 75352), (568, 37676), (1136, 18838), (2272, 9419)]