81469360

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{2969}}^1$

素因数の和:3003

約数の個数: 80

約数和(自身を含む): 220968000

約数和(自身を除く): 139498640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 2969, 3430, 3920, 5488, 5938, 6860, 11876, 13720, 14845, 20783, 23752, 27440, 29690, 41566, 47504, 59380, 83132, 103915, 118760, 145481, 166264, 207830, 237520, 290962, 332528, 415660, 581924, 727405, 831320, 1018367, 1163848, 1454810, 1662640, 2036734, 2327696, 2909620, 4073468, 5091835, 5819240, 8146936, 10183670, 11638480, 16293872, 20367340, 40734680, 81469360]

約数ペア:

[(1, 81469360), (2, 40734680), (4, 20367340), (5, 16293872), (7, 11638480), (8, 10183670), (10, 8146936), (14, 5819240), (16, 5091835), (20, 4073468), (28, 2909620), (35, 2327696), (40, 2036734), (49, 1662640), (56, 1454810), (70, 1163848), (80, 1018367), (98, 831320), (112, 727405), (140, 581924), (196, 415660), (245, 332528), (280, 290962), (343, 237520), (392, 207830), (490, 166264), (560, 145481), (686, 118760), (784, 103915), (980, 83132), (1372, 59380), (1715, 47504), (1960, 41566), (2744, 29690), (2969, 27440), (3430, 23752), (3920, 20783), (5488, 14845), (5938, 13720), (6860, 11876)]