21209940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117833}}^1$

素因数の和:117848

約数の個数: 36

約数和(自身を含む): 64337364

約数和(自身を除く): 43127424

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117833, 235666, 353499, 471332, 589165, 706998, 1060497, 1178330, 1413996, 1767495, 2120994, 2356660, 3534990, 4241988, 5302485, 7069980, 10604970, 21209940]

約数ペア:

[(1, 21209940), (2, 10604970), (3, 7069980), (4, 5302485), (5, 4241988), (6, 3534990), (9, 2356660), (10, 2120994), (12, 1767495), (15, 1413996), (18, 1178330), (20, 1060497), (30, 706998), (36, 589165), (45, 471332), (60, 353499), (90, 235666), (180, 117833)]