31378480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{409}}^1$

素因数の和:566

約数の個数: 80

約数和(自身を含む): 84191040

約数和(自身を除く): 52812560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 137, 140, 274, 280, 409, 548, 560, 685, 818, 959, 1096, 1370, 1636, 1918, 2045, 2192, 2740, 2863, 3272, 3836, 4090, 4795, 5480, 5726, 6544, 7672, 8180, 9590, 10960, 11452, 14315, 15344, 16360, 19180, 22904, 28630, 32720, 38360, 45808, 56033, 57260, 76720, 112066, 114520, 224132, 229040, 280165, 392231, 448264, 560330, 784462, 896528, 1120660, 1568924, 1961155, 2241320, 3137848, 3922310, 4482640, 6275696, 7844620, 15689240, 31378480]

約数ペア:

[(1, 31378480), (2, 15689240), (4, 7844620), (5, 6275696), (7, 4482640), (8, 3922310), (10, 3137848), (14, 2241320), (16, 1961155), (20, 1568924), (28, 1120660), (35, 896528), (40, 784462), (56, 560330), (70, 448264), (80, 392231), (112, 280165), (137, 229040), (140, 224132), (274, 114520), (280, 112066), (409, 76720), (548, 57260), (560, 56033), (685, 45808), (818, 38360), (959, 32720), (1096, 28630), (1370, 22904), (1636, 19180), (1918, 16360), (2045, 15344), (2192, 14315), (2740, 11452), (2863, 10960), (3272, 9590), (3836, 8180), (4090, 7672), (4795, 6544), (5480, 5726)]