21603890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{28057}}^1$

素因数の和:28082

約数の個数: 32

約数和(自身を含む): 48484224

約数和(自身を除く): 26880334

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 28057, 56114, 140285, 196399, 280570, 308627, 392798, 617254, 981995, 1543135, 1963990, 2160389, 3086270, 4320778, 10801945, 21603890]

約数ペア:

[(1, 21603890), (2, 10801945), (5, 4320778), (7, 3086270), (10, 2160389), (11, 1963990), (14, 1543135), (22, 981995), (35, 617254), (55, 392798), (70, 308627), (77, 280570), (110, 196399), (154, 140285), (385, 56114), (770, 28057)]