20691990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{6967}}^1$

素因数の和:6994

約数の個数: 64

約数和(自身を含む): 60203520

約数和(自身を除く): 39511530

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 33, 45, 54, 55, 66, 90, 99, 110, 135, 165, 198, 270, 297, 330, 495, 594, 990, 1485, 2970, 6967, 13934, 20901, 34835, 41802, 62703, 69670, 76637, 104505, 125406, 153274, 188109, 209010, 229911, 313515, 376218, 383185, 459822, 627030, 689733, 766370, 940545, 1149555, 1379466, 1881090, 2069199, 2299110, 3448665, 4138398, 6897330, 10345995, 20691990]

約数ペア:

[(1, 20691990), (2, 10345995), (3, 6897330), (5, 4138398), (6, 3448665), (9, 2299110), (10, 2069199), (11, 1881090), (15, 1379466), (18, 1149555), (22, 940545), (27, 766370), (30, 689733), (33, 627030), (45, 459822), (54, 383185), (55, 376218), (66, 313515), (90, 229911), (99, 209010), (110, 188109), (135, 153274), (165, 125406), (198, 104505), (270, 76637), (297, 69670), (330, 62703), (495, 41802), (594, 34835), (990, 20901), (1485, 13934), (2970, 6967)]