71647821

素因数分解:

$3^5\times 7^1\times {\mathrm{73}}^1\times {\mathrm{577}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 124552064

約数和(自身を除く): 52904243

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 81, 189, 219, 243, 511, 567, 577, 657, 1533, 1701, 1731, 1971, 4039, 4599, 5193, 5913, 12117, 13797, 15579, 17739, 36351, 41391, 42121, 46737, 109053, 124173, 126363, 140211, 294847, 327159, 379089, 884541, 981477, 1137267, 2653623, 3411801, 7960869, 10235403, 23882607, 71647821]

約数ペア:

[(1, 71647821), (3, 23882607), (7, 10235403), (9, 7960869), (21, 3411801), (27, 2653623), (63, 1137267), (73, 981477), (81, 884541), (189, 379089), (219, 327159), (243, 294847), (511, 140211), (567, 126363), (577, 124173), (657, 109053), (1533, 46737), (1701, 42121), (1731, 41391), (1971, 36351), (4039, 17739), (4599, 15579), (5193, 13797), (5913, 12117)]