21450480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{643}}^1$

素因数の和:798

約数の個数: 80

約数和(自身を含む): 67079040

約数和(自身を除く): 45628560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 139, 240, 278, 417, 556, 643, 695, 834, 1112, 1286, 1390, 1668, 1929, 2085, 2224, 2572, 2780, 3215, 3336, 3858, 4170, 5144, 5560, 6430, 6672, 7716, 8340, 9645, 10288, 11120, 12860, 15432, 16680, 19290, 25720, 30864, 33360, 38580, 51440, 77160, 89377, 154320, 178754, 268131, 357508, 446885, 536262, 715016, 893770, 1072524, 1340655, 1430032, 1787540, 2145048, 2681310, 3575080, 4290096, 5362620, 7150160, 10725240, 21450480]

約数ペア:

[(1, 21450480), (2, 10725240), (3, 7150160), (4, 5362620), (5, 4290096), (6, 3575080), (8, 2681310), (10, 2145048), (12, 1787540), (15, 1430032), (16, 1340655), (20, 1072524), (24, 893770), (30, 715016), (40, 536262), (48, 446885), (60, 357508), (80, 268131), (120, 178754), (139, 154320), (240, 89377), (278, 77160), (417, 51440), (556, 38580), (643, 33360), (695, 30864), (834, 25720), (1112, 19290), (1286, 16680), (1390, 15432), (1668, 12860), (1929, 11120), (2085, 10288), (2224, 9645), (2572, 8340), (2780, 7716), (3215, 6672), (3336, 6430), (3858, 5560), (4170, 5144)]