21791820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1447}}^1$

素因数の和:1710

約数の個数: 48

約数和(自身を含む): 61302528

約数和(自身を除く): 39510708

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 251, 502, 753, 1004, 1255, 1447, 1506, 2510, 2894, 3012, 3765, 4341, 5020, 5788, 7235, 7530, 8682, 14470, 15060, 17364, 21705, 28940, 43410, 86820, 363197, 726394, 1089591, 1452788, 1815985, 2179182, 3631970, 4358364, 5447955, 7263940, 10895910, 21791820]

約数ペア:

[(1, 21791820), (2, 10895910), (3, 7263940), (4, 5447955), (5, 4358364), (6, 3631970), (10, 2179182), (12, 1815985), (15, 1452788), (20, 1089591), (30, 726394), (60, 363197), (251, 86820), (502, 43410), (753, 28940), (1004, 21705), (1255, 17364), (1447, 15060), (1506, 14470), (2510, 8682), (2894, 7530), (3012, 7235), (3765, 5788), (4341, 5020)]