20275980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3797}}^1$

素因数の和:3898

約数の個数: 48

約数和(自身を含む): 57425760

約数和(自身を除く): 37149780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 89, 178, 267, 356, 445, 534, 890, 1068, 1335, 1780, 2670, 3797, 5340, 7594, 11391, 15188, 18985, 22782, 37970, 45564, 56955, 75940, 113910, 227820, 337933, 675866, 1013799, 1351732, 1689665, 2027598, 3379330, 4055196, 5068995, 6758660, 10137990, 20275980]

約数ペア:

[(1, 20275980), (2, 10137990), (3, 6758660), (4, 5068995), (5, 4055196), (6, 3379330), (10, 2027598), (12, 1689665), (15, 1351732), (20, 1013799), (30, 675866), (60, 337933), (89, 227820), (178, 113910), (267, 75940), (356, 56955), (445, 45564), (534, 37970), (890, 22782), (1068, 18985), (1335, 15188), (1780, 11391), (2670, 7594), (3797, 5340)]