81189213

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1\times {\mathrm{251}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 126508032

約数和(自身を除く): 45318819

約数列:

[1, 3, 7, 21, 73, 211, 219, 251, 511, 633, 753, 1477, 1533, 1757, 4431, 5271, 15403, 18323, 46209, 52961, 54969, 107821, 128261, 158883, 323463, 370727, 384783, 1112181, 3866153, 11598459, 27063071, 81189213]

約数ペア:

[(1, 81189213), (3, 27063071), (7, 11598459), (21, 3866153), (73, 1112181), (211, 384783), (219, 370727), (251, 323463), (511, 158883), (633, 128261), (753, 107821), (1477, 54969), (1533, 52961), (1757, 46209), (4431, 18323), (5271, 15403)]