21301515

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{5441}}^1$

素因数の和:5484

約数の個数: 32

約数和(自身を含む): 39182400

約数和(自身を除く): 17880885

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 5441, 16323, 27205, 48969, 81615, 146907, 157789, 244845, 473367, 734535, 788945, 1420101, 2366835, 4260303, 7100505, 21301515]

約数ペア:

[(1, 21301515), (3, 7100505), (5, 4260303), (9, 2366835), (15, 1420101), (27, 788945), (29, 734535), (45, 473367), (87, 244845), (135, 157789), (145, 146907), (261, 81615), (435, 48969), (783, 27205), (1305, 16323), (3915, 5441)]