212909680

素因数分解:

$2^4\times 5^1\times {\mathrm{2661371}}^1$

素因数の和:2661384

約数の個数: 20

約数和(自身を含む): 495015192

約数和(自身を除く): 282105512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2661371, 5322742, 10645484, 13306855, 21290968, 26613710, 42581936, 53227420, 106454840, 212909680]

約数ペア:

[(1, 212909680), (2, 106454840), (4, 53227420), (5, 42581936), (8, 26613710), (10, 21290968), (16, 13306855), (20, 10645484), (40, 5322742), (80, 2661371)]