81091210

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1\times {\mathrm{257}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 148236480

約数和(自身を除く): 67145270

約数列:

[1, 2, 5, 10, 139, 227, 257, 278, 454, 514, 695, 1135, 1285, 1390, 2270, 2570, 31553, 35723, 58339, 63106, 71446, 116678, 157765, 178615, 291695, 315530, 357230, 583390, 8109121, 16218242, 40545605, 81091210]

約数ペア:

[(1, 81091210), (2, 40545605), (5, 16218242), (10, 8109121), (139, 583390), (227, 357230), (257, 315530), (278, 291695), (454, 178615), (514, 157765), (695, 116678), (1135, 71446), (1285, 63106), (1390, 58339), (2270, 35723), (2570, 31553)]