21209490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{235661}}^1$

素因数の和:235674

約数の個数: 24

約数和(自身を含む): 55144908

約数和(自身を除く): 33935418

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 235661, 471322, 706983, 1178305, 1413966, 2120949, 2356610, 3534915, 4241898, 7069830, 10604745, 21209490]

約数ペア:

[(1, 21209490), (2, 10604745), (3, 7069830), (5, 4241898), (6, 3534915), (9, 2356610), (10, 2120949), (15, 1413966), (18, 1178305), (30, 706983), (45, 471322), (90, 235661)]