21609369

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:366

約数の個数: 32

約数和(自身を含む): 33367040

約数和(自身を除く): 11757671

約数列:

[1, 3, 9, 27, 37, 97, 111, 223, 291, 333, 669, 873, 999, 2007, 2619, 3589, 6021, 8251, 10767, 21631, 24753, 32301, 64893, 74259, 96903, 194679, 222777, 584037, 800347, 2401041, 7203123, 21609369]

約数ペア:

[(1, 21609369), (3, 7203123), (9, 2401041), (27, 800347), (37, 584037), (97, 222777), (111, 194679), (223, 96903), (291, 74259), (333, 64893), (669, 32301), (873, 24753), (999, 21631), (2007, 10767), (2619, 8251), (3589, 6021)]