21450790

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{463}}^1$

素因数の和:624

約数の個数: 32

約数和(自身を含む): 39989376

約数和(自身を除く): 18538586

約数列:

[1, 2, 5, 10, 41, 82, 113, 205, 226, 410, 463, 565, 926, 1130, 2315, 4630, 4633, 9266, 18983, 23165, 37966, 46330, 52319, 94915, 104638, 189830, 261595, 523190, 2145079, 4290158, 10725395, 21450790]

約数ペア:

[(1, 21450790), (2, 10725395), (5, 4290158), (10, 2145079), (41, 523190), (82, 261595), (113, 189830), (205, 104638), (226, 94915), (410, 52319), (463, 46330), (565, 37966), (926, 23165), (1130, 18983), (2315, 9266), (4630, 4633)]