249990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:664

約数の個数: 32

約数和(自身を含む): 647136

約数和(自身を除く): 397146

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 641, 1282, 1923, 3205, 3846, 6410, 8333, 9615, 16666, 19230, 24999, 41665, 49998, 83330, 124995, 249990]

約数ペア:

[(1, 249990), (2, 124995), (3, 83330), (5, 49998), (6, 41665), (10, 24999), (13, 19230), (15, 16666), (26, 9615), (30, 8333), (39, 6410), (65, 3846), (78, 3205), (130, 1923), (195, 1282), (390, 641)]