289940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 739200

約数和(自身を除く): 449260

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 109, 133, 140, 190, 218, 266, 380, 436, 532, 545, 665, 763, 1090, 1330, 1526, 2071, 2180, 2660, 3052, 3815, 4142, 7630, 8284, 10355, 14497, 15260, 20710, 28994, 41420, 57988, 72485, 144970, 289940]

約数ペア:

[(1, 289940), (2, 144970), (4, 72485), (5, 57988), (7, 41420), (10, 28994), (14, 20710), (19, 15260), (20, 14497), (28, 10355), (35, 8284), (38, 7630), (70, 4142), (76, 3815), (95, 3052), (109, 2660), (133, 2180), (140, 2071), (190, 1526), (218, 1330), (266, 1090), (380, 763), (436, 665), (532, 545)]