21149954

素因数分解:

$2^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{10139}}^1$

素因数の和:10297

約数の個数: 16

約数和(自身を含む): 36504000

約数和(自身を除く): 15354046

約数列:

[1, 2, 7, 14, 149, 298, 1043, 2086, 10139, 20278, 70973, 141946, 1510711, 3021422, 10574977, 21149954]

約数ペア:

[(1, 21149954), (2, 10574977), (7, 3021422), (14, 1510711), (149, 141946), (298, 70973), (1043, 20278), (2086, 10139)]