81218580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{5393}}^1$

素因数の和:5656

約数の個数: 48

約数和(自身を含む): 228360384

約数和(自身を除く): 147141804

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 251, 502, 753, 1004, 1255, 1506, 2510, 3012, 3765, 5020, 5393, 7530, 10786, 15060, 16179, 21572, 26965, 32358, 53930, 64716, 80895, 107860, 161790, 323580, 1353643, 2707286, 4060929, 5414572, 6768215, 8121858, 13536430, 16243716, 20304645, 27072860, 40609290, 81218580]

約数ペア:

[(1, 81218580), (2, 40609290), (3, 27072860), (4, 20304645), (5, 16243716), (6, 13536430), (10, 8121858), (12, 6768215), (15, 5414572), (20, 4060929), (30, 2707286), (60, 1353643), (251, 323580), (502, 161790), (753, 107860), (1004, 80895), (1255, 64716), (1506, 53930), (2510, 32358), (3012, 26965), (3765, 21572), (5020, 16179), (5393, 15060), (7530, 10786)]