28712313

素因数分解:

$3^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:739

約数の個数: 40

約数和(自身を含む): 49716480

約数和(自身を除く): 21004167

約数列:

[1, 3, 7, 9, 21, 27, 63, 79, 81, 189, 237, 553, 567, 641, 711, 1659, 1923, 2133, 4487, 4977, 5769, 6399, 13461, 14931, 17307, 40383, 44793, 50639, 51921, 121149, 151917, 354473, 363447, 455751, 1063419, 1367253, 3190257, 4101759, 9570771, 28712313]

約数ペア:

[(1, 28712313), (3, 9570771), (7, 4101759), (9, 3190257), (21, 1367253), (27, 1063419), (63, 455751), (79, 363447), (81, 354473), (189, 151917), (237, 121149), (553, 51921), (567, 50639), (641, 44793), (711, 40383), (1659, 17307), (1923, 14931), (2133, 13461), (4487, 6399), (4977, 5769)]