642690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:243

約数の個数: 48

約数和(自身を含む): 1725048

約数和(自身を除く): 1082358

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 37, 45, 74, 90, 111, 185, 193, 222, 333, 370, 386, 555, 579, 666, 965, 1110, 1158, 1665, 1737, 1930, 2895, 3330, 3474, 5790, 7141, 8685, 14282, 17370, 21423, 35705, 42846, 64269, 71410, 107115, 128538, 214230, 321345, 642690]

約数ペア:

[(1, 642690), (2, 321345), (3, 214230), (5, 128538), (6, 107115), (9, 71410), (10, 64269), (15, 42846), (18, 35705), (30, 21423), (37, 17370), (45, 14282), (74, 8685), (90, 7141), (111, 5790), (185, 3474), (193, 3330), (222, 2895), (333, 1930), (370, 1737), (386, 1665), (555, 1158), (579, 1110), (666, 965)]