19486280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{661}}^1$

素因数の和:750

約数の個数: 64

約数和(自身を含む): 48617280

約数和(自身を除く): 29131000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 67, 88, 110, 134, 220, 268, 335, 440, 536, 661, 670, 737, 1322, 1340, 1474, 2644, 2680, 2948, 3305, 3685, 5288, 5896, 6610, 7271, 7370, 13220, 14542, 14740, 26440, 29084, 29480, 36355, 44287, 58168, 72710, 88574, 145420, 177148, 221435, 290840, 354296, 442870, 487157, 885740, 974314, 1771480, 1948628, 2435785, 3897256, 4871570, 9743140, 19486280]

約数ペア:

[(1, 19486280), (2, 9743140), (4, 4871570), (5, 3897256), (8, 2435785), (10, 1948628), (11, 1771480), (20, 974314), (22, 885740), (40, 487157), (44, 442870), (55, 354296), (67, 290840), (88, 221435), (110, 177148), (134, 145420), (220, 88574), (268, 72710), (335, 58168), (440, 44287), (536, 36355), (661, 29480), (670, 29084), (737, 26440), (1322, 14740), (1340, 14542), (1474, 13220), (2644, 7370), (2680, 7271), (2948, 6610), (3305, 5896), (3685, 5288)]