65240020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79561}}^1$

素因数の和:79611

約数の個数: 24

約数和(自身を含む): 140347368

約数和(自身を除く): 75107348

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 79561, 159122, 318244, 397805, 795610, 1591220, 3262001, 6524002, 13048004, 16310005, 32620010, 65240020]

約数ペア:

[(1, 65240020), (2, 32620010), (4, 16310005), (5, 13048004), (10, 6524002), (20, 3262001), (41, 1591220), (82, 795610), (164, 397805), (205, 318244), (410, 159122), (820, 79561)]