643948

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:289

約数の個数: 24

約数和(自身を含む): 1223600

約数和(自身を除く): 579652

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 148, 229, 458, 703, 916, 1406, 2812, 4351, 8473, 8702, 16946, 17404, 33892, 160987, 321974, 643948]

約数ペア:

[(1, 643948), (2, 321974), (4, 160987), (19, 33892), (37, 17404), (38, 16946), (74, 8702), (76, 8473), (148, 4351), (229, 2812), (458, 1406), (703, 916)]