20685780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{113}}^2$

素因数の和:247

約数の個数: 90

約数和(自身を含む): 65471406

約数和(自身を除く): 44785626

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 113, 135, 162, 180, 226, 270, 324, 339, 405, 452, 540, 565, 678, 810, 1017, 1130, 1356, 1620, 1695, 2034, 2260, 3051, 3390, 4068, 5085, 6102, 6780, 9153, 10170, 12204, 12769, 15255, 18306, 20340, 25538, 30510, 36612, 38307, 45765, 51076, 61020, 63845, 76614, 91530, 114921, 127690, 153228, 183060, 191535, 229842, 255380, 344763, 383070, 459684, 574605, 689526, 766140, 1034289, 1149210, 1379052, 1723815, 2068578, 2298420, 3447630, 4137156, 5171445, 6895260, 10342890, 20685780]

約数ペア:

[(1, 20685780), (2, 10342890), (3, 6895260), (4, 5171445), (5, 4137156), (6, 3447630), (9, 2298420), (10, 2068578), (12, 1723815), (15, 1379052), (18, 1149210), (20, 1034289), (27, 766140), (30, 689526), (36, 574605), (45, 459684), (54, 383070), (60, 344763), (81, 255380), (90, 229842), (108, 191535), (113, 183060), (135, 153228), (162, 127690), (180, 114921), (226, 91530), (270, 76614), (324, 63845), (339, 61020), (405, 51076), (452, 45765), (540, 38307), (565, 36612), (678, 30510), (810, 25538), (1017, 20340), (1130, 18306), (1356, 15255), (1620, 12769), (1695, 12204), (2034, 10170), (2260, 9153), (3051, 6780), (3390, 6102), (4068, 5085)]