21007448

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:600

約数の個数: 64

約数和(自身を含む): 49939200

約数和(自身を除く): 28931752

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 67, 77, 88, 134, 154, 268, 308, 469, 509, 536, 616, 737, 938, 1018, 1474, 1876, 2036, 2948, 3563, 3752, 4072, 5159, 5599, 5896, 7126, 10318, 11198, 14252, 20636, 22396, 28504, 34103, 39193, 41272, 44792, 68206, 78386, 136412, 156772, 238721, 272824, 313544, 375133, 477442, 750266, 954884, 1500532, 1909768, 2625931, 3001064, 5251862, 10503724, 21007448]

約数ペア:

[(1, 21007448), (2, 10503724), (4, 5251862), (7, 3001064), (8, 2625931), (11, 1909768), (14, 1500532), (22, 954884), (28, 750266), (44, 477442), (56, 375133), (67, 313544), (77, 272824), (88, 238721), (134, 156772), (154, 136412), (268, 78386), (308, 68206), (469, 44792), (509, 41272), (536, 39193), (616, 34103), (737, 28504), (938, 22396), (1018, 20636), (1474, 14252), (1876, 11198), (2036, 10318), (2948, 7126), (3563, 5896), (3752, 5599), (4072, 5159)]