39997980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20201}}^1$

素因数の和:20227

約数の個数: 72

約数和(自身を含む): 132363504

約数和(自身を除く): 92365524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 20201, 40402, 60603, 80804, 101005, 121206, 181809, 202010, 222211, 242412, 303015, 363618, 404020, 444422, 606030, 666633, 727236, 888844, 909045, 1111055, 1212060, 1333266, 1818090, 1999899, 2222110, 2666532, 3333165, 3636180, 3999798, 4444220, 6666330, 7999596, 9999495, 13332660, 19998990, 39997980]

約数ペア:

[(1, 39997980), (2, 19998990), (3, 13332660), (4, 9999495), (5, 7999596), (6, 6666330), (9, 4444220), (10, 3999798), (11, 3636180), (12, 3333165), (15, 2666532), (18, 2222110), (20, 1999899), (22, 1818090), (30, 1333266), (33, 1212060), (36, 1111055), (44, 909045), (45, 888844), (55, 727236), (60, 666633), (66, 606030), (90, 444422), (99, 404020), (110, 363618), (132, 303015), (165, 242412), (180, 222211), (198, 202010), (220, 181809), (330, 121206), (396, 101005), (495, 80804), (660, 60603), (990, 40402), (1980, 20201)]