20999175

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{6829}}^1$

素因数の和:6883

約数の個数: 24

約数和(自身を含む): 35570640

約数和(自身を除く): 14571465

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 6829, 20487, 34145, 102435, 170725, 279989, 512175, 839967, 1399945, 4199835, 6999725, 20999175]

約数ペア:

[(1, 20999175), (3, 6999725), (5, 4199835), (15, 1399945), (25, 839967), (41, 512175), (75, 279989), (123, 170725), (205, 102435), (615, 34145), (1025, 20487), (3075, 6829)]