20493585

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:167

約数の個数: 96

約数和(自身を含む): 44478720

約数和(自身を除く): 23985135

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 43, 45, 51, 63, 85, 89, 105, 119, 129, 153, 215, 255, 267, 301, 315, 357, 387, 445, 595, 623, 645, 731, 765, 801, 903, 1071, 1335, 1505, 1513, 1785, 1869, 1935, 2193, 2709, 3115, 3655, 3827, 4005, 4515, 4539, 5117, 5355, 5607, 6579, 7565, 9345, 10591, 10965, 11481, 13545, 13617, 15351, 19135, 22695, 25585, 26789, 28035, 31773, 32895, 34443, 46053, 52955, 57405, 65059, 68085, 76755, 80367, 95319, 133945, 158865, 172215, 195177, 230265, 241101, 325295, 401835, 455413, 476595, 585531, 975885, 1205505, 1366239, 2277065, 2927655, 4098717, 6831195, 20493585]

約数ペア:

[(1, 20493585), (3, 6831195), (5, 4098717), (7, 2927655), (9, 2277065), (15, 1366239), (17, 1205505), (21, 975885), (35, 585531), (43, 476595), (45, 455413), (51, 401835), (63, 325295), (85, 241101), (89, 230265), (105, 195177), (119, 172215), (129, 158865), (153, 133945), (215, 95319), (255, 80367), (267, 76755), (301, 68085), (315, 65059), (357, 57405), (387, 52955), (445, 46053), (595, 34443), (623, 32895), (645, 31773), (731, 28035), (765, 26789), (801, 25585), (903, 22695), (1071, 19135), (1335, 15351), (1505, 13617), (1513, 13545), (1785, 11481), (1869, 10965), (1935, 10591), (2193, 9345), (2709, 7565), (3115, 6579), (3655, 5607), (3827, 5355), (4005, 5117), (4515, 4539)]