21306671421

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{448741}}^1$

素因数の和:448794

約数の個数: 48

約数和(自身を含む): 36832743360

約数和(自身を除く): 15526071939

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 119, 133, 147, 323, 357, 399, 833, 931, 969, 2261, 2499, 2793, 6783, 15827, 47481, 448741, 1346223, 3141187, 7628597, 8526079, 9423561, 21988309, 22885791, 25578237, 53400179, 59682553, 65964927, 144943343, 160200537, 179047659, 373801253, 417777871, 434830029, 1014603401, 1121403759, 1253333613, 3043810203, 7102223807, 21306671421]

約数ペア:

[(1, 21306671421), (3, 7102223807), (7, 3043810203), (17, 1253333613), (19, 1121403759), (21, 1014603401), (49, 434830029), (51, 417777871), (57, 373801253), (119, 179047659), (133, 160200537), (147, 144943343), (323, 65964927), (357, 59682553), (399, 53400179), (833, 25578237), (931, 22885791), (969, 21988309), (2261, 9423561), (2499, 8526079), (2793, 7628597), (6783, 3141187), (15827, 1346223), (47481, 448741)]