20761232380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{316193}}^1$

素因数の和:316283

約数の個数: 72

約数和(自身を含む): 51473853648

約数和(自身を除く): 30712621268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 67, 70, 98, 134, 140, 196, 245, 268, 335, 469, 490, 670, 938, 980, 1340, 1876, 2345, 3283, 4690, 6566, 9380, 13132, 16415, 32830, 65660, 316193, 632386, 1264772, 1580965, 2213351, 3161930, 4426702, 6323860, 8853404, 11066755, 15493457, 21184931, 22133510, 30986914, 42369862, 44267020, 61973828, 77467285, 84739724, 105924655, 148294517, 154934570, 211849310, 296589034, 309869140, 423698620, 593178068, 741472585, 1038061619, 1482945170, 2076123238, 2965890340, 4152246476, 5190308095, 10380616190, 20761232380]

約数ペア:

[(1, 20761232380), (2, 10380616190), (4, 5190308095), (5, 4152246476), (7, 2965890340), (10, 2076123238), (14, 1482945170), (20, 1038061619), (28, 741472585), (35, 593178068), (49, 423698620), (67, 309869140), (70, 296589034), (98, 211849310), (134, 154934570), (140, 148294517), (196, 105924655), (245, 84739724), (268, 77467285), (335, 61973828), (469, 44267020), (490, 42369862), (670, 30986914), (938, 22133510), (980, 21184931), (1340, 15493457), (1876, 11066755), (2345, 8853404), (3283, 6323860), (4690, 4426702), (6566, 3161930), (9380, 2213351), (13132, 1580965), (16415, 1264772), (32830, 632386), (65660, 316193)]