21068940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1399}}^1$

素因数の和:1662

約数の個数: 48

約数和(自身を含む): 59270400

約数和(自身を除く): 38201460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 251, 502, 753, 1004, 1255, 1399, 1506, 2510, 2798, 3012, 3765, 4197, 5020, 5596, 6995, 7530, 8394, 13990, 15060, 16788, 20985, 27980, 41970, 83940, 351149, 702298, 1053447, 1404596, 1755745, 2106894, 3511490, 4213788, 5267235, 7022980, 10534470, 21068940]

約数ペア:

[(1, 21068940), (2, 10534470), (3, 7022980), (4, 5267235), (5, 4213788), (6, 3511490), (10, 2106894), (12, 1755745), (15, 1404596), (20, 1053447), (30, 702298), (60, 351149), (251, 83940), (502, 41970), (753, 27980), (1004, 20985), (1255, 16788), (1399, 15060), (1506, 13990), (2510, 8394), (2798, 7530), (3012, 6995), (3765, 5596), (4197, 5020)]