28131810

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1229}}^1$

素因数の和:1355

約数の個数: 64

約数和(自身を含む): 77932800

約数和(自身を除く): 49800990

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 109, 210, 218, 327, 545, 654, 763, 1090, 1229, 1526, 1635, 2289, 2458, 3270, 3687, 3815, 4578, 6145, 7374, 7630, 8603, 11445, 12290, 17206, 18435, 22890, 25809, 36870, 43015, 51618, 86030, 129045, 133961, 258090, 267922, 401883, 669805, 803766, 937727, 1339610, 1875454, 2009415, 2813181, 4018830, 4688635, 5626362, 9377270, 14065905, 28131810]

約数ペア:

[(1, 28131810), (2, 14065905), (3, 9377270), (5, 5626362), (6, 4688635), (7, 4018830), (10, 2813181), (14, 2009415), (15, 1875454), (21, 1339610), (30, 937727), (35, 803766), (42, 669805), (70, 401883), (105, 267922), (109, 258090), (210, 133961), (218, 129045), (327, 86030), (545, 51618), (654, 43015), (763, 36870), (1090, 25809), (1229, 22890), (1526, 18435), (1635, 17206), (2289, 12290), (2458, 11445), (3270, 8603), (3687, 7630), (3815, 7374), (4578, 6145)]