20686860

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1321}}^1$

素因数の和:1368

約数の個数: 96

約数和(自身を含む): 66628800

約数和(自身を除く): 45941940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 36, 45, 54, 58, 60, 87, 90, 108, 116, 135, 145, 174, 180, 261, 270, 290, 348, 435, 522, 540, 580, 783, 870, 1044, 1305, 1321, 1566, 1740, 2610, 2642, 3132, 3915, 3963, 5220, 5284, 6605, 7830, 7926, 11889, 13210, 15660, 15852, 19815, 23778, 26420, 35667, 38309, 39630, 47556, 59445, 71334, 76618, 79260, 114927, 118890, 142668, 153236, 178335, 191545, 229854, 237780, 344781, 356670, 383090, 459708, 574635, 689562, 713340, 766180, 1034343, 1149270, 1379124, 1723905, 2068686, 2298540, 3447810, 4137372, 5171715, 6895620, 10343430, 20686860]

約数ペア:

[(1, 20686860), (2, 10343430), (3, 6895620), (4, 5171715), (5, 4137372), (6, 3447810), (9, 2298540), (10, 2068686), (12, 1723905), (15, 1379124), (18, 1149270), (20, 1034343), (27, 766180), (29, 713340), (30, 689562), (36, 574635), (45, 459708), (54, 383090), (58, 356670), (60, 344781), (87, 237780), (90, 229854), (108, 191545), (116, 178335), (135, 153236), (145, 142668), (174, 118890), (180, 114927), (261, 79260), (270, 76618), (290, 71334), (348, 59445), (435, 47556), (522, 39630), (540, 38309), (580, 35667), (783, 26420), (870, 23778), (1044, 19815), (1305, 15852), (1321, 15660), (1566, 13210), (1740, 11889), (2610, 7926), (2642, 7830), (3132, 6605), (3915, 5284), (3963, 5220)]