21107331

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3851}}^1$

素因数の和:3896

約数の個数: 32

約数和(自身を含む): 36979200

約数和(自身を除く): 15871869

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3851, 5481, 11553, 26957, 34659, 80871, 103977, 111679, 242613, 335037, 727839, 781753, 1005111, 2345259, 3015333, 7035777, 21107331]

約数ペア:

[(1, 21107331), (3, 7035777), (7, 3015333), (9, 2345259), (21, 1005111), (27, 781753), (29, 727839), (63, 335037), (87, 242613), (189, 111679), (203, 103977), (261, 80871), (609, 34659), (783, 26957), (1827, 11553), (3851, 5481)]