20969445

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{457}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 42209280

約数和(自身を除く): 21239835

約数列:

[1, 3, 5, 7, 15, 19, 21, 23, 35, 57, 69, 95, 105, 115, 133, 161, 285, 345, 399, 437, 457, 483, 665, 805, 1311, 1371, 1995, 2185, 2285, 2415, 3059, 3199, 6555, 6855, 8683, 9177, 9597, 10511, 15295, 15995, 26049, 31533, 43415, 45885, 47985, 52555, 60781, 73577, 130245, 157665, 182343, 199709, 220731, 303905, 367885, 599127, 911715, 998545, 1103655, 1397963, 2995635, 4193889, 6989815, 20969445]

約数ペア:

[(1, 20969445), (3, 6989815), (5, 4193889), (7, 2995635), (15, 1397963), (19, 1103655), (21, 998545), (23, 911715), (35, 599127), (57, 367885), (69, 303905), (95, 220731), (105, 199709), (115, 182343), (133, 157665), (161, 130245), (285, 73577), (345, 60781), (399, 52555), (437, 47985), (457, 45885), (483, 43415), (665, 31533), (805, 26049), (1311, 15995), (1371, 15295), (1995, 10511), (2185, 9597), (2285, 9177), (2415, 8683), (3059, 6855), (3199, 6555)]