21519380

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{6011}}^1$

素因数の和:6199

約数の個数: 24

約数和(自身を含む): 45450720

約数和(自身を除く): 23931340

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 6011, 12022, 24044, 30055, 60110, 120220, 1075969, 2151938, 4303876, 5379845, 10759690, 21519380]

約数ペア:

[(1, 21519380), (2, 10759690), (4, 5379845), (5, 4303876), (10, 2151938), (20, 1075969), (179, 120220), (358, 60110), (716, 30055), (895, 24044), (1790, 12022), (3580, 6011)]