20782260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{439}}^1$

素因数の和:717

約数の個数: 72

約数和(自身を含む): 63423360

約数和(自身を除く): 42641100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 263, 439, 526, 789, 878, 1052, 1315, 1317, 1578, 1756, 2195, 2367, 2630, 2634, 3156, 3945, 3951, 4390, 4734, 5260, 5268, 6585, 7890, 7902, 8780, 9468, 11835, 13170, 15780, 15804, 19755, 23670, 26340, 39510, 47340, 79020, 115457, 230914, 346371, 461828, 577285, 692742, 1039113, 1154570, 1385484, 1731855, 2078226, 2309140, 3463710, 4156452, 5195565, 6927420, 10391130, 20782260]

約数ペア:

[(1, 20782260), (2, 10391130), (3, 6927420), (4, 5195565), (5, 4156452), (6, 3463710), (9, 2309140), (10, 2078226), (12, 1731855), (15, 1385484), (18, 1154570), (20, 1039113), (30, 692742), (36, 577285), (45, 461828), (60, 346371), (90, 230914), (180, 115457), (263, 79020), (439, 47340), (526, 39510), (789, 26340), (878, 23670), (1052, 19755), (1315, 15804), (1317, 15780), (1578, 13170), (1756, 11835), (2195, 9468), (2367, 8780), (2630, 7902), (2634, 7890), (3156, 6585), (3945, 5268), (3951, 5260), (4390, 4734)]