21561840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29947}}^1$

素因数の和:29966

約数の個数: 60

約数和(自身を含む): 72414264

約数和(自身を除く): 50852424

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29947, 59894, 89841, 119788, 149735, 179682, 239576, 269523, 299470, 359364, 449205, 479152, 539046, 598940, 718728, 898410, 1078092, 1197880, 1347615, 1437456, 1796820, 2156184, 2395760, 2695230, 3593640, 4312368, 5390460, 7187280, 10780920, 21561840]

約数ペア:

[(1, 21561840), (2, 10780920), (3, 7187280), (4, 5390460), (5, 4312368), (6, 3593640), (8, 2695230), (9, 2395760), (10, 2156184), (12, 1796820), (15, 1437456), (16, 1347615), (18, 1197880), (20, 1078092), (24, 898410), (30, 718728), (36, 598940), (40, 539046), (45, 479152), (48, 449205), (60, 359364), (72, 299470), (80, 269523), (90, 239576), (120, 179682), (144, 149735), (180, 119788), (240, 89841), (360, 59894), (720, 29947)]