20089520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{617}}^1$

素因数の和:678

約数の個数: 80

約数和(自身を含む): 52416288

約数和(自身を除く): 32326768

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 407, 440, 592, 617, 740, 814, 880, 1234, 1480, 1628, 2035, 2468, 2960, 3085, 3256, 4070, 4936, 6170, 6512, 6787, 8140, 9872, 12340, 13574, 16280, 22829, 24680, 27148, 32560, 33935, 45658, 49360, 54296, 67870, 91316, 108592, 114145, 135740, 182632, 228290, 251119, 271480, 365264, 456580, 502238, 542960, 913160, 1004476, 1255595, 1826320, 2008952, 2511190, 4017904, 5022380, 10044760, 20089520]

約数ペア:

[(1, 20089520), (2, 10044760), (4, 5022380), (5, 4017904), (8, 2511190), (10, 2008952), (11, 1826320), (16, 1255595), (20, 1004476), (22, 913160), (37, 542960), (40, 502238), (44, 456580), (55, 365264), (74, 271480), (80, 251119), (88, 228290), (110, 182632), (148, 135740), (176, 114145), (185, 108592), (220, 91316), (296, 67870), (370, 54296), (407, 49360), (440, 45658), (592, 33935), (617, 32560), (740, 27148), (814, 24680), (880, 22829), (1234, 16280), (1480, 13574), (1628, 12340), (2035, 9872), (2468, 8140), (2960, 6787), (3085, 6512), (3256, 6170), (4070, 4936)]