21979312

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25919}}^1$

素因数の和:25980

約数の個数: 20

約数和(自身を含む): 43390080

約数和(自身を除く): 21410768

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25919, 51838, 103676, 207352, 414704, 1373707, 2747414, 5494828, 10989656, 21979312]

約数ペア:

[(1, 21979312), (2, 10989656), (4, 5494828), (8, 2747414), (16, 1373707), (53, 414704), (106, 207352), (212, 103676), (424, 51838), (848, 25919)]