21533445

素因数分解:

$3^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{479}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 39836160

約数和(自身を除く): 18302715

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 81, 111, 135, 185, 243, 333, 405, 479, 555, 999, 1215, 1437, 1665, 2395, 2997, 4311, 4995, 7185, 8991, 12933, 14985, 17723, 21555, 38799, 44955, 53169, 64665, 88615, 116397, 159507, 193995, 265845, 478521, 581985, 797535, 1435563, 2392605, 4306689, 7177815, 21533445]

約数ペア:

[(1, 21533445), (3, 7177815), (5, 4306689), (9, 2392605), (15, 1435563), (27, 797535), (37, 581985), (45, 478521), (81, 265845), (111, 193995), (135, 159507), (185, 116397), (243, 88615), (333, 64665), (405, 53169), (479, 44955), (555, 38799), (999, 21555), (1215, 17723), (1437, 14985), (1665, 12933), (2395, 8991), (2997, 7185), (4311, 4995)]