21417580

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26119}}^1$

素因数の和:26169

約数の個数: 24

約数和(自身を含む): 46075680

約数和(自身を除く): 24658100

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26119, 52238, 104476, 130595, 261190, 522380, 1070879, 2141758, 4283516, 5354395, 10708790, 21417580]

約数ペア:

[(1, 21417580), (2, 10708790), (4, 5354395), (5, 4283516), (10, 2141758), (20, 1070879), (41, 522380), (82, 261190), (164, 130595), (205, 104476), (410, 52238), (820, 26119)]