201991720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{401}}^1$

素因数の和:683

約数の個数: 96

約数和(自身を含む): 532063080

約数和(自身を除く): 330071360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 257, 280, 392, 401, 490, 514, 802, 980, 1028, 1285, 1604, 1799, 1960, 2005, 2056, 2570, 2807, 3208, 3598, 4010, 5140, 5614, 7196, 8020, 8995, 10280, 11228, 12593, 14035, 14392, 16040, 17990, 19649, 22456, 25186, 28070, 35980, 39298, 50372, 56140, 62965, 71960, 78596, 98245, 100744, 103057, 112280, 125930, 157192, 196490, 206114, 251860, 392980, 412228, 503720, 515285, 721399, 785960, 824456, 1030570, 1442798, 2061140, 2885596, 3606995, 4122280, 5049793, 5771192, 7213990, 10099586, 14427980, 20199172, 25248965, 28855960, 40398344, 50497930, 100995860, 201991720]

約数ペア:

[(1, 201991720), (2, 100995860), (4, 50497930), (5, 40398344), (7, 28855960), (8, 25248965), (10, 20199172), (14, 14427980), (20, 10099586), (28, 7213990), (35, 5771192), (40, 5049793), (49, 4122280), (56, 3606995), (70, 2885596), (98, 2061140), (140, 1442798), (196, 1030570), (245, 824456), (257, 785960), (280, 721399), (392, 515285), (401, 503720), (490, 412228), (514, 392980), (802, 251860), (980, 206114), (1028, 196490), (1285, 157192), (1604, 125930), (1799, 112280), (1960, 103057), (2005, 100744), (2056, 98245), (2570, 78596), (2807, 71960), (3208, 62965), (3598, 56140), (4010, 50372), (5140, 39298), (5614, 35980), (7196, 28070), (8020, 25186), (8995, 22456), (10280, 19649), (11228, 17990), (12593, 16040), (14035, 14392)]