18945964

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2801}}^1$

素因数の和:2913

約数の個数: 24

約数和(自身を含む): 35305200

約数和(自身を除く): 16359236

約数列:

[1, 2, 4, 19, 38, 76, 89, 178, 356, 1691, 2801, 3382, 5602, 6764, 11204, 53219, 106438, 212876, 249289, 498578, 997156, 4736491, 9472982, 18945964]

約数ペア:

[(1, 18945964), (2, 9472982), (4, 4736491), (19, 997156), (38, 498578), (76, 249289), (89, 212876), (178, 106438), (356, 53219), (1691, 11204), (2801, 6764), (3382, 5602)]