21339508

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{4603}}^1$

素因数の和:4687

約数の個数: 24

約数和(自身を含む): 39962720

約数和(自身を除く): 18623212

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 244, 1159, 2318, 4603, 4636, 9206, 18412, 87457, 174914, 280783, 349828, 561566, 1123132, 5334877, 10669754, 21339508]

約数ペア:

[(1, 21339508), (2, 10669754), (4, 5334877), (19, 1123132), (38, 561566), (61, 349828), (76, 280783), (122, 174914), (244, 87457), (1159, 18412), (2318, 9206), (4603, 4636)]