21224889

素因数分解:

$3^3\times 7^2\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:347

約数の個数: 48

約数和(自身を含む): 37319040

約数和(自身を除く): 16094151

約数列:

[1, 3, 7, 9, 21, 27, 49, 61, 63, 147, 183, 189, 263, 427, 441, 549, 789, 1281, 1323, 1647, 1841, 2367, 2989, 3843, 5523, 7101, 8967, 11529, 12887, 16043, 16569, 26901, 38661, 48129, 49707, 80703, 112301, 115983, 144387, 336903, 347949, 433161, 786107, 1010709, 2358321, 3032127, 7074963, 21224889]

約数ペア:

[(1, 21224889), (3, 7074963), (7, 3032127), (9, 2358321), (21, 1010709), (27, 786107), (49, 433161), (61, 347949), (63, 336903), (147, 144387), (183, 115983), (189, 112301), (263, 80703), (427, 49707), (441, 48129), (549, 38661), (789, 26901), (1281, 16569), (1323, 16043), (1647, 12887), (1841, 11529), (2367, 8967), (2989, 7101), (3843, 5523)]