21897880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28813}}^1$

素因数の和:28843

約数の個数: 32

約数和(自身を含む): 51865200

約数和(自身を除く): 29967320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28813, 57626, 115252, 144065, 230504, 288130, 547447, 576260, 1094894, 1152520, 2189788, 2737235, 4379576, 5474470, 10948940, 21897880]

約数ペア:

[(1, 21897880), (2, 10948940), (4, 5474470), (5, 4379576), (8, 2737235), (10, 2189788), (19, 1152520), (20, 1094894), (38, 576260), (40, 547447), (76, 288130), (95, 230504), (152, 144065), (190, 115252), (380, 57626), (760, 28813)]