138460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:82

約数の個数: 48

約数和(自身を含む): 354816

約数和(自身を除く): 216356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 43, 46, 70, 86, 92, 115, 140, 161, 172, 215, 230, 301, 322, 430, 460, 602, 644, 805, 860, 989, 1204, 1505, 1610, 1978, 3010, 3220, 3956, 4945, 6020, 6923, 9890, 13846, 19780, 27692, 34615, 69230, 138460]

約数ペア:

[(1, 138460), (2, 69230), (4, 34615), (5, 27692), (7, 19780), (10, 13846), (14, 9890), (20, 6923), (23, 6020), (28, 4945), (35, 3956), (43, 3220), (46, 3010), (70, 1978), (86, 1610), (92, 1505), (115, 1204), (140, 989), (161, 860), (172, 805), (215, 644), (230, 602), (301, 460), (322, 430)]