20187790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12539}}^1$

素因数の和:12576

約数の個数: 32

約数和(自身を含む): 43338240

約数和(自身を除く): 23150450

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 805, 1610, 12539, 25078, 62695, 87773, 125390, 175546, 288397, 438865, 576794, 877730, 1441985, 2018779, 2883970, 4037558, 10093895, 20187790]

約数ペア:

[(1, 20187790), (2, 10093895), (5, 4037558), (7, 2883970), (10, 2018779), (14, 1441985), (23, 877730), (35, 576794), (46, 438865), (70, 288397), (115, 175546), (161, 125390), (230, 87773), (322, 62695), (805, 25078), (1610, 12539)]