20390420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2333}}^1$

素因数の和:2384

約数の個数: 48

約数和(自身を含む): 47053440

約数和(自身を除く): 26663020

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 380, 437, 460, 874, 1748, 2185, 2333, 4370, 4666, 8740, 9332, 11665, 23330, 44327, 46660, 53659, 88654, 107318, 177308, 214636, 221635, 268295, 443270, 536590, 886540, 1019521, 1073180, 2039042, 4078084, 5097605, 10195210, 20390420]

約数ペア:

[(1, 20390420), (2, 10195210), (4, 5097605), (5, 4078084), (10, 2039042), (19, 1073180), (20, 1019521), (23, 886540), (38, 536590), (46, 443270), (76, 268295), (92, 221635), (95, 214636), (115, 177308), (190, 107318), (230, 88654), (380, 53659), (437, 46660), (460, 44327), (874, 23330), (1748, 11665), (2185, 9332), (2333, 8740), (4370, 4666)]