20736990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2237}}^1$

素因数の和:2353

約数の個数: 48

約数和(自身を含む): 54463968

約数和(自身を除く): 33726978

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 103, 206, 309, 515, 618, 927, 1030, 1545, 1854, 2237, 3090, 4474, 4635, 6711, 9270, 11185, 13422, 20133, 22370, 33555, 40266, 67110, 100665, 201330, 230411, 460822, 691233, 1152055, 1382466, 2073699, 2304110, 3456165, 4147398, 6912330, 10368495, 20736990]

約数ペア:

[(1, 20736990), (2, 10368495), (3, 6912330), (5, 4147398), (6, 3456165), (9, 2304110), (10, 2073699), (15, 1382466), (18, 1152055), (30, 691233), (45, 460822), (90, 230411), (103, 201330), (206, 100665), (309, 67110), (515, 40266), (618, 33555), (927, 22370), (1030, 20133), (1545, 13422), (1854, 11185), (2237, 9270), (3090, 6711), (4474, 4635)]