21506835

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1009}}^1$

素因数の和:1060

約数の個数: 48

約数和(自身を含む): 41450400

約数和(自身を除く): 19943565

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 49, 87, 105, 145, 147, 203, 245, 435, 609, 735, 1009, 1015, 1421, 3027, 3045, 4263, 5045, 7063, 7105, 15135, 21189, 21315, 29261, 35315, 49441, 87783, 105945, 146305, 148323, 204827, 247205, 438915, 614481, 741615, 1024135, 1433789, 3072405, 4301367, 7168945, 21506835]

約数ペア:

[(1, 21506835), (3, 7168945), (5, 4301367), (7, 3072405), (15, 1433789), (21, 1024135), (29, 741615), (35, 614481), (49, 438915), (87, 247205), (105, 204827), (145, 148323), (147, 146305), (203, 105945), (245, 87783), (435, 49441), (609, 35315), (735, 29261), (1009, 21315), (1015, 21189), (1421, 15135), (3027, 7105), (3045, 7063), (4263, 5045)]