138789020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{408203}}^1$

素因数の和:408229

約数の個数: 24

約数和(自身を含む): 308602224

約数和(自身を除く): 169813204

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 408203, 816406, 1632812, 2041015, 4082030, 6939451, 8164060, 13878902, 27757804, 34697255, 69394510, 138789020]

約数ペア:

[(1, 138789020), (2, 69394510), (4, 34697255), (5, 27757804), (10, 13878902), (17, 8164060), (20, 6939451), (34, 4082030), (68, 2041015), (85, 1632812), (170, 816406), (340, 408203)]