21117663

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{5003}}^1$

素因数の和:5083

約数の個数: 24

約数和(自身を含む): 35388288

約数和(自身を除く): 14270625

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 5003, 15009, 35021, 45027, 105063, 315189, 335201, 1005603, 2346407, 3016809, 7039221, 21117663]

約数ペア:

[(1, 21117663), (3, 7039221), (7, 3016809), (9, 2346407), (21, 1005603), (63, 335201), (67, 315189), (201, 105063), (469, 45027), (603, 35021), (1407, 15009), (4221, 5003)]