21286156

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{379}}^1\times {\mathrm{739}}^1$

素因数の和:1141

約数の個数: 24

約数和(自身を含む): 39368000

約数和(自身を除く): 18081844

約数列:

[1, 2, 4, 19, 38, 76, 379, 739, 758, 1478, 1516, 2956, 7201, 14041, 14402, 28082, 28804, 56164, 280081, 560162, 1120324, 5321539, 10643078, 21286156]

約数ペア:

[(1, 21286156), (2, 10643078), (4, 5321539), (19, 1120324), (38, 560162), (76, 280081), (379, 56164), (739, 28804), (758, 28082), (1478, 14402), (1516, 14041), (2956, 7201)]