18520276

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{433}}^1$

素因数の和:508

約数の個数: 36

約数和(自身を含む): 35441308

約数和(自身を除く): 16921032

約数列:

[1, 2, 4, 17, 34, 37, 68, 74, 148, 289, 433, 578, 629, 866, 1156, 1258, 1732, 2516, 7361, 10693, 14722, 16021, 21386, 29444, 32042, 42772, 64084, 125137, 250274, 272357, 500548, 544714, 1089428, 4630069, 9260138, 18520276]

約数ペア:

[(1, 18520276), (2, 9260138), (4, 4630069), (17, 1089428), (34, 544714), (37, 500548), (68, 272357), (74, 250274), (148, 125137), (289, 64084), (433, 42772), (578, 32042), (629, 29444), (866, 21386), (1156, 16021), (1258, 14722), (1732, 10693), (2516, 7361)]