16628980

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{991}}^1$

素因数の和:1839

約数の個数: 24

約数和(自身を含む): 34997760

約数和(自身を除く): 18368780

約数列:

[1, 2, 4, 5, 10, 20, 839, 991, 1678, 1982, 3356, 3964, 4195, 4955, 8390, 9910, 16780, 19820, 831449, 1662898, 3325796, 4157245, 8314490, 16628980]

約数ペア:

[(1, 16628980), (2, 8314490), (4, 4157245), (5, 3325796), (10, 1662898), (20, 831449), (839, 19820), (991, 16780), (1678, 9910), (1982, 8390), (3356, 4955), (3964, 4195)]