30719780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{16879}}^1$

素因数の和:16908

約数の個数: 48

約数和(自身を含む): 79403520

約数和(自身を除く): 48683740

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 16879, 33758, 67516, 84395, 118153, 168790, 219427, 236306, 337580, 438854, 472612, 590765, 877708, 1097135, 1181530, 1535989, 2194270, 2363060, 3071978, 4388540, 6143956, 7679945, 15359890, 30719780]

約数ペア:

[(1, 30719780), (2, 15359890), (4, 7679945), (5, 6143956), (7, 4388540), (10, 3071978), (13, 2363060), (14, 2194270), (20, 1535989), (26, 1181530), (28, 1097135), (35, 877708), (52, 590765), (65, 472612), (70, 438854), (91, 337580), (130, 236306), (140, 219427), (182, 168790), (260, 118153), (364, 84395), (455, 67516), (910, 33758), (1820, 16879)]