18981370

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 36937368

約数和(自身を除く): 17955998

約数列:

[1, 2, 5, 10, 29, 37, 58, 61, 74, 122, 145, 185, 290, 305, 370, 610, 841, 1073, 1682, 1769, 2146, 2257, 3538, 4205, 4514, 5365, 8410, 8845, 10730, 11285, 17690, 22570, 31117, 51301, 62234, 65453, 102602, 130906, 155585, 256505, 311170, 327265, 513010, 654530, 1898137, 3796274, 9490685, 18981370]

約数ペア:

[(1, 18981370), (2, 9490685), (5, 3796274), (10, 1898137), (29, 654530), (37, 513010), (58, 327265), (61, 311170), (74, 256505), (122, 155585), (145, 130906), (185, 102602), (290, 65453), (305, 62234), (370, 51301), (610, 31117), (841, 22570), (1073, 17690), (1682, 11285), (1769, 10730), (2146, 8845), (2257, 8410), (3538, 5365), (4205, 4514)]