28139140

素因数分解:

$2^2\times 5^1\times {\mathrm{881}}^1\times {\mathrm{1597}}^1$

素因数の和:2487

約数の個数: 24

約数和(自身を含む): 59196312

約数和(自身を除く): 31057172

約数列:

[1, 2, 4, 5, 10, 20, 881, 1597, 1762, 3194, 3524, 4405, 6388, 7985, 8810, 15970, 17620, 31940, 1406957, 2813914, 5627828, 7034785, 14069570, 28139140]

約数ペア:

[(1, 28139140), (2, 14069570), (4, 7034785), (5, 5627828), (10, 2813914), (20, 1406957), (881, 31940), (1597, 17620), (1762, 15970), (3194, 8810), (3524, 7985), (4405, 6388)]