40152580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{397}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 91269360

約数和(自身を除く): 51116780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 389, 397, 778, 794, 1556, 1588, 1945, 1985, 3890, 3970, 5057, 5161, 7780, 7940, 10114, 10322, 20228, 20644, 25285, 25805, 50570, 51610, 101140, 103220, 154433, 308866, 617732, 772165, 1544330, 2007629, 3088660, 4015258, 8030516, 10038145, 20076290, 40152580]

約数ペア:

[(1, 40152580), (2, 20076290), (4, 10038145), (5, 8030516), (10, 4015258), (13, 3088660), (20, 2007629), (26, 1544330), (52, 772165), (65, 617732), (130, 308866), (260, 154433), (389, 103220), (397, 101140), (778, 51610), (794, 50570), (1556, 25805), (1588, 25285), (1945, 20644), (1985, 20228), (3890, 10322), (3970, 10114), (5057, 7940), (5161, 7780)]