21403538

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1171}}^1$

素因数の和:1242

約数の個数: 32

約数和(自身を含む): 37410240

約数和(自身を除く): 16006702

約数列:

[1, 2, 13, 19, 26, 37, 38, 74, 247, 481, 494, 703, 962, 1171, 1406, 2342, 9139, 15223, 18278, 22249, 30446, 43327, 44498, 86654, 289237, 563251, 578474, 823213, 1126502, 1646426, 10701769, 21403538]

約数ペア:

[(1, 21403538), (2, 10701769), (13, 1646426), (19, 1126502), (26, 823213), (37, 578474), (38, 563251), (74, 289237), (247, 86654), (481, 44498), (494, 43327), (703, 30446), (962, 22249), (1171, 18278), (1406, 15223), (2342, 9139)]