21628539

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:281

約数の個数: 40

約数和(自身を含む): 34760880

約数和(自身を除く): 13132341

約数列:

[1, 3, 9, 17, 27, 51, 81, 113, 139, 153, 339, 417, 459, 1017, 1251, 1377, 1921, 2363, 3051, 3753, 5763, 7089, 9153, 11259, 15707, 17289, 21267, 47121, 51867, 63801, 141363, 155601, 191403, 267019, 424089, 801057, 1272267, 2403171, 7209513, 21628539]

約数ペア:

[(1, 21628539), (3, 7209513), (9, 2403171), (17, 1272267), (27, 801057), (51, 424089), (81, 267019), (113, 191403), (139, 155601), (153, 141363), (339, 63801), (417, 51867), (459, 47121), (1017, 21267), (1251, 17289), (1377, 15707), (1921, 11259), (2363, 9153), (3051, 7089), (3753, 5763)]