198660385

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1$

素因数の和:406

約数の個数: 64

約数和(自身を含む): 318504960

約数和(自身を除く): 119844575

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 127, 187, 239, 385, 595, 635, 889, 935, 1195, 1309, 1397, 1673, 2159, 2629, 4063, 4445, 6545, 6985, 8365, 9779, 10795, 13145, 15113, 18403, 20315, 23749, 28441, 30353, 44693, 48895, 75565, 92015, 118745, 142205, 151765, 166243, 212471, 223465, 312851, 333883, 516001, 831215, 1062355, 1564255, 1669415, 2337181, 2580005, 3612007, 5676011, 11685905, 18060035, 28380055, 39732077, 198660385]

約数ペア:

[(1, 198660385), (5, 39732077), (7, 28380055), (11, 18060035), (17, 11685905), (35, 5676011), (55, 3612007), (77, 2580005), (85, 2337181), (119, 1669415), (127, 1564255), (187, 1062355), (239, 831215), (385, 516001), (595, 333883), (635, 312851), (889, 223465), (935, 212471), (1195, 166243), (1309, 151765), (1397, 142205), (1673, 118745), (2159, 92015), (2629, 75565), (4063, 48895), (4445, 44693), (6545, 30353), (6985, 28441), (8365, 23749), (9779, 20315), (10795, 18403), (13145, 15113)]