28490721

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{967}}^1$

素因数の和:1061

約数の個数: 32

約数和(自身を含む): 46092288

約数和(自身を除く): 17601567

約数列:

[1, 3, 7, 21, 23, 61, 69, 161, 183, 427, 483, 967, 1281, 1403, 2901, 4209, 6769, 9821, 20307, 22241, 29463, 58987, 66723, 155687, 176961, 412909, 467061, 1238727, 1356701, 4070103, 9496907, 28490721]

約数ペア:

[(1, 28490721), (3, 9496907), (7, 4070103), (21, 1356701), (23, 1238727), (61, 467061), (69, 412909), (161, 176961), (183, 155687), (427, 66723), (483, 58987), (967, 29463), (1281, 22241), (1403, 20307), (2901, 9821), (4209, 6769)]