12799880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4507}}^1$

素因数の和:4589

約数の個数: 32

約数和(自身を含む): 29211840

約数和(自身を除く): 16411960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 4507, 9014, 18028, 22535, 36056, 45070, 90140, 180280, 319997, 639994, 1279988, 1599985, 2559976, 3199970, 6399940, 12799880]

約数ペア:

[(1, 12799880), (2, 6399940), (4, 3199970), (5, 2559976), (8, 1599985), (10, 1279988), (20, 639994), (40, 319997), (71, 180280), (142, 90140), (284, 45070), (355, 36056), (568, 22535), (710, 18028), (1420, 9014), (2840, 4507)]