4005990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 10998720

約数和(自身を除く): 6992730

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 54, 74, 90, 111, 135, 185, 222, 270, 333, 370, 401, 555, 666, 802, 999, 1110, 1203, 1665, 1998, 2005, 2406, 3330, 3609, 4010, 4995, 6015, 7218, 9990, 10827, 12030, 14837, 18045, 21654, 29674, 36090, 44511, 54135, 74185, 89022, 108270, 133533, 148370, 222555, 267066, 400599, 445110, 667665, 801198, 1335330, 2002995, 4005990]

約数ペア:

[(1, 4005990), (2, 2002995), (3, 1335330), (5, 801198), (6, 667665), (9, 445110), (10, 400599), (15, 267066), (18, 222555), (27, 148370), (30, 133533), (37, 108270), (45, 89022), (54, 74185), (74, 54135), (90, 44511), (111, 36090), (135, 29674), (185, 21654), (222, 18045), (270, 14837), (333, 12030), (370, 10827), (401, 9990), (555, 7218), (666, 6015), (802, 4995), (999, 4010), (1110, 3609), (1203, 3330), (1665, 2406), (1998, 2005)]