21570315

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 38227968

約数和(自身を除く): 16657653

約数列:

[1, 3, 5, 13, 15, 39, 65, 67, 127, 169, 195, 201, 335, 381, 507, 635, 845, 871, 1005, 1651, 1905, 2535, 2613, 4355, 4953, 8255, 8509, 11323, 13065, 21463, 24765, 25527, 33969, 42545, 56615, 64389, 107315, 110617, 127635, 169845, 321945, 331851, 553085, 1438021, 1659255, 4314063, 7190105, 21570315]

約数ペア:

[(1, 21570315), (3, 7190105), (5, 4314063), (13, 1659255), (15, 1438021), (39, 553085), (65, 331851), (67, 321945), (127, 169845), (169, 127635), (195, 110617), (201, 107315), (335, 64389), (381, 56615), (507, 42545), (635, 33969), (845, 25527), (871, 24765), (1005, 21463), (1651, 13065), (1905, 11323), (2535, 8509), (2613, 8255), (4355, 4953)]