19976565

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27179}}^1$

素因数の和:27201

約数の個数: 24

約数和(自身を含む): 37182240

約数和(自身を除く): 17205675

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27179, 81537, 135895, 190253, 407685, 570759, 951265, 1331771, 2853795, 3995313, 6658855, 19976565]

約数ペア:

[(1, 19976565), (3, 6658855), (5, 3995313), (7, 2853795), (15, 1331771), (21, 951265), (35, 570759), (49, 407685), (105, 190253), (147, 135895), (245, 81537), (735, 27179)]