21830068

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{751}}^1$

素因数の和:824

約数の個数: 36

約数和(自身を含む): 42385728

約数和(自身を除く): 20555660

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 169, 172, 338, 559, 676, 751, 1118, 1502, 2236, 3004, 7267, 9763, 14534, 19526, 29068, 32293, 39052, 64586, 126919, 129172, 253838, 419809, 507676, 839618, 1679236, 5457517, 10915034, 21830068]

約数ペア:

[(1, 21830068), (2, 10915034), (4, 5457517), (13, 1679236), (26, 839618), (43, 507676), (52, 419809), (86, 253838), (169, 129172), (172, 126919), (338, 64586), (559, 39052), (676, 32293), (751, 29068), (1118, 19526), (1502, 14534), (2236, 9763), (3004, 7267)]