21344820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50821}}^1$

素因数の和:50840

約数の個数: 48

約数和(自身を含む): 68304768

約数和(自身を除く): 46959948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50821, 101642, 152463, 203284, 254105, 304926, 355747, 508210, 609852, 711494, 762315, 1016420, 1067241, 1422988, 1524630, 1778735, 2134482, 3049260, 3557470, 4268964, 5336205, 7114940, 10672410, 21344820]

約数ペア:

[(1, 21344820), (2, 10672410), (3, 7114940), (4, 5336205), (5, 4268964), (6, 3557470), (7, 3049260), (10, 2134482), (12, 1778735), (14, 1524630), (15, 1422988), (20, 1067241), (21, 1016420), (28, 762315), (30, 711494), (35, 609852), (42, 508210), (60, 355747), (70, 304926), (84, 254105), (105, 203284), (140, 152463), (210, 101642), (420, 50821)]