15721980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1669}}^1$

素因数の和:1838

約数の個数: 48

約数和(自身を含む): 44328480

約数和(自身を除く): 28606500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 628, 785, 942, 1570, 1669, 1884, 2355, 3140, 3338, 4710, 5007, 6676, 8345, 9420, 10014, 16690, 20028, 25035, 33380, 50070, 100140, 262033, 524066, 786099, 1048132, 1310165, 1572198, 2620330, 3144396, 3930495, 5240660, 7860990, 15721980]

約数ペア:

[(1, 15721980), (2, 7860990), (3, 5240660), (4, 3930495), (5, 3144396), (6, 2620330), (10, 1572198), (12, 1310165), (15, 1048132), (20, 786099), (30, 524066), (60, 262033), (157, 100140), (314, 50070), (471, 33380), (628, 25035), (785, 20028), (942, 16690), (1570, 10014), (1669, 9420), (1884, 8345), (2355, 6676), (3140, 5007), (3338, 4710)]