21622181

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:389

約数の個数: 24

約数和(自身を含む): 27000216

約数和(自身を除く): 5378035

約数列:

[1, 7, 17, 49, 101, 119, 257, 707, 833, 1717, 1799, 4369, 4949, 12019, 12593, 25957, 30583, 84133, 181699, 214081, 441269, 1271893, 3088883, 21622181]

約数ペア:

[(1, 21622181), (7, 3088883), (17, 1271893), (49, 441269), (101, 214081), (119, 181699), (257, 84133), (707, 30583), (833, 25957), (1717, 12593), (1799, 12019), (4369, 4949)]