19805805

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6199}}^1$

素因数の和:6281

約数の個数: 24

約数和(自身を含む): 34819200

約数和(自身を除く): 15013395

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6199, 18597, 30995, 55791, 92985, 278955, 440129, 1320387, 2200645, 3961161, 6601935, 19805805]

約数ペア:

[(1, 19805805), (3, 6601935), (5, 3961161), (9, 2200645), (15, 1320387), (45, 440129), (71, 278955), (213, 92985), (355, 55791), (639, 30995), (1065, 18597), (3195, 6199)]