2021637905

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{61}}^2$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 3044074176

約数和(自身を除く): 1022436271

約数列:

[1, 5, 7, 19, 35, 43, 61, 95, 133, 215, 301, 305, 361, 427, 665, 817, 1159, 1505, 1805, 2135, 2527, 2623, 3721, 4085, 5719, 5795, 8113, 12635, 13115, 15523, 18361, 18605, 22021, 26047, 28595, 40565, 49837, 70699, 77615, 91805, 108661, 110105, 130235, 154147, 160003, 249185, 348859, 353495, 494893, 543305, 770735, 800015, 946903, 1120021, 1343281, 1744295, 2474465, 3040057, 4734515, 5600105, 6628321, 6716405, 9402967, 15200285, 21280399, 33141605, 47014835, 57761083, 106401995, 288805415, 404327581, 2021637905]

約数ペア:

[(1, 2021637905), (5, 404327581), (7, 288805415), (19, 106401995), (35, 57761083), (43, 47014835), (61, 33141605), (95, 21280399), (133, 15200285), (215, 9402967), (301, 6716405), (305, 6628321), (361, 5600105), (427, 4734515), (665, 3040057), (817, 2474465), (1159, 1744295), (1505, 1343281), (1805, 1120021), (2135, 946903), (2527, 800015), (2623, 770735), (3721, 543305), (4085, 494893), (5719, 353495), (5795, 348859), (8113, 249185), (12635, 160003), (13115, 154147), (15523, 130235), (18361, 110105), (18605, 108661), (22021, 91805), (26047, 77615), (28595, 70699), (40565, 49837)]