21452721

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10065999

約数列:

[1, 3, 23, 29, 69, 71, 87, 151, 213, 453, 667, 1633, 2001, 2059, 3473, 4379, 4899, 6177, 10419, 10721, 13137, 32163, 47357, 100717, 142071, 246583, 302151, 310909, 739749, 932727, 7150907, 21452721]

約数ペア:

[(1, 21452721), (3, 7150907), (23, 932727), (29, 739749), (69, 310909), (71, 302151), (87, 246583), (151, 142071), (213, 100717), (453, 47357), (667, 32163), (1633, 13137), (2001, 10721), (2059, 10419), (3473, 6177), (4379, 4899)]