138778820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{408173}}^1$

素因数の和:408199

約数の個数: 24

約数和(自身を含む): 308579544

約数和(自身を除く): 169800724

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 408173, 816346, 1632692, 2040865, 4081730, 6938941, 8163460, 13877882, 27755764, 34694705, 69389410, 138778820]

約数ペア:

[(1, 138778820), (2, 69389410), (4, 34694705), (5, 27755764), (10, 13877882), (17, 8163460), (20, 6938941), (34, 4081730), (68, 2040865), (85, 1632692), (170, 816346), (340, 408173)]