20760880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{283}}^1$

素因数の和:434

約数の個数: 80

約数和(自身を含む): 55782144

約数和(自身を除く): 35021264

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 131, 140, 262, 280, 283, 524, 560, 566, 655, 917, 1048, 1132, 1310, 1415, 1834, 1981, 2096, 2264, 2620, 2830, 3668, 3962, 4528, 4585, 5240, 5660, 7336, 7924, 9170, 9905, 10480, 11320, 14672, 15848, 18340, 19810, 22640, 31696, 36680, 37073, 39620, 73360, 74146, 79240, 148292, 158480, 185365, 259511, 296584, 370730, 519022, 593168, 741460, 1038044, 1297555, 1482920, 2076088, 2595110, 2965840, 4152176, 5190220, 10380440, 20760880]

約数ペア:

[(1, 20760880), (2, 10380440), (4, 5190220), (5, 4152176), (7, 2965840), (8, 2595110), (10, 2076088), (14, 1482920), (16, 1297555), (20, 1038044), (28, 741460), (35, 593168), (40, 519022), (56, 370730), (70, 296584), (80, 259511), (112, 185365), (131, 158480), (140, 148292), (262, 79240), (280, 74146), (283, 73360), (524, 39620), (560, 37073), (566, 36680), (655, 31696), (917, 22640), (1048, 19810), (1132, 18340), (1310, 15848), (1415, 14672), (1834, 11320), (1981, 10480), (2096, 9905), (2264, 9170), (2620, 7924), (2830, 7336), (3668, 5660), (3962, 5240), (4528, 4585)]