20571960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{683}}^1$

素因数の和:948

約数の個数: 64

約数和(自身を含む): 62052480

約数和(自身を除く): 41480520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 251, 502, 683, 753, 1004, 1255, 1366, 1506, 2008, 2049, 2510, 2732, 3012, 3415, 3765, 4098, 5020, 5464, 6024, 6830, 7530, 8196, 10040, 10245, 13660, 15060, 16392, 20490, 27320, 30120, 40980, 81960, 171433, 342866, 514299, 685732, 857165, 1028598, 1371464, 1714330, 2057196, 2571495, 3428660, 4114392, 5142990, 6857320, 10285980, 20571960]

約数ペア:

[(1, 20571960), (2, 10285980), (3, 6857320), (4, 5142990), (5, 4114392), (6, 3428660), (8, 2571495), (10, 2057196), (12, 1714330), (15, 1371464), (20, 1028598), (24, 857165), (30, 685732), (40, 514299), (60, 342866), (120, 171433), (251, 81960), (502, 40980), (683, 30120), (753, 27320), (1004, 20490), (1255, 16392), (1366, 15060), (1506, 13660), (2008, 10245), (2049, 10040), (2510, 8196), (2732, 7530), (3012, 6830), (3415, 6024), (3765, 5464), (4098, 5020)]