397020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 1199520

約数和(自身を除く): 802500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 509, 780, 1018, 1527, 2036, 2545, 3054, 5090, 6108, 6617, 7635, 10180, 13234, 15270, 19851, 26468, 30540, 33085, 39702, 66170, 79404, 99255, 132340, 198510, 397020]

約数ペア:

[(1, 397020), (2, 198510), (3, 132340), (4, 99255), (5, 79404), (6, 66170), (10, 39702), (12, 33085), (13, 30540), (15, 26468), (20, 19851), (26, 15270), (30, 13234), (39, 10180), (52, 7635), (60, 6617), (65, 6108), (78, 5090), (130, 3054), (156, 2545), (195, 2036), (260, 1527), (390, 1018), (509, 780)]