20662845

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19150275

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 53, 79, 105, 141, 159, 235, 237, 265, 329, 371, 395, 553, 705, 795, 987, 1113, 1185, 1645, 1659, 1855, 2491, 2765, 3713, 4187, 4935, 5565, 7473, 8295, 11139, 12455, 12561, 17437, 18565, 20935, 25991, 29309, 37365, 52311, 55695, 62805, 77973, 87185, 87927, 129955, 146545, 196789, 261555, 389865, 439635, 590367, 983945, 1377523, 2951835, 4132569, 6887615, 20662845]

約数ペア:

[(1, 20662845), (3, 6887615), (5, 4132569), (7, 2951835), (15, 1377523), (21, 983945), (35, 590367), (47, 439635), (53, 389865), (79, 261555), (105, 196789), (141, 146545), (159, 129955), (235, 87927), (237, 87185), (265, 77973), (329, 62805), (371, 55695), (395, 52311), (553, 37365), (705, 29309), (795, 25991), (987, 20935), (1113, 18565), (1185, 17437), (1645, 12561), (1659, 12455), (1855, 11139), (2491, 8295), (2765, 7473), (3713, 5565), (4187, 4935)]