78468680

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{7459}}^1$

素因数の和:7733

約数の個数: 32

約数和(自身を含む): 177249600

約数和(自身を除く): 98780920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 7459, 10520, 14918, 29836, 37295, 59672, 74590, 149180, 298360, 1961717, 3923434, 7846868, 9808585, 15693736, 19617170, 39234340, 78468680]

約数ペア:

[(1, 78468680), (2, 39234340), (4, 19617170), (5, 15693736), (8, 9808585), (10, 7846868), (20, 3923434), (40, 1961717), (263, 298360), (526, 149180), (1052, 74590), (1315, 59672), (2104, 37295), (2630, 29836), (5260, 14918), (7459, 10520)]