21863709

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3989}}^1$

素因数の和:4034

約数の個数: 32

約数和(自身を含む): 38304000

約数和(自身を除く): 16440291

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3989, 5481, 11967, 27923, 35901, 83769, 107703, 115681, 251307, 347043, 753921, 809767, 1041129, 2429301, 3123387, 7287903, 21863709]

約数ペア:

[(1, 21863709), (3, 7287903), (7, 3123387), (9, 2429301), (21, 1041129), (27, 809767), (29, 753921), (63, 347043), (87, 251307), (189, 115681), (203, 107703), (261, 83769), (609, 35901), (783, 27923), (1827, 11967), (3989, 5481)]