65156380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{439}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 141261120

約数和(自身を除く): 76104740

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 181, 205, 362, 410, 439, 724, 820, 878, 905, 1756, 1810, 2195, 3620, 4390, 7421, 8780, 14842, 17999, 29684, 35998, 37105, 71996, 74210, 79459, 89995, 148420, 158918, 179990, 317836, 359980, 397295, 794590, 1589180, 3257819, 6515638, 13031276, 16289095, 32578190, 65156380]

約数ペア:

[(1, 65156380), (2, 32578190), (4, 16289095), (5, 13031276), (10, 6515638), (20, 3257819), (41, 1589180), (82, 794590), (164, 397295), (181, 359980), (205, 317836), (362, 179990), (410, 158918), (439, 148420), (724, 89995), (820, 79459), (878, 74210), (905, 71996), (1756, 37105), (1810, 35998), (2195, 29684), (3620, 17999), (4390, 14842), (7421, 8780)]