21710980

素因数分解:

$2^2\times 5^1\times {\mathrm{673}}^1\times {\mathrm{1613}}^1$

素因数の和:2295

約数の個数: 24

約数和(自身を含む): 45689112

約数和(自身を除く): 23978132

約数列:

[1, 2, 4, 5, 10, 20, 673, 1346, 1613, 2692, 3226, 3365, 6452, 6730, 8065, 13460, 16130, 32260, 1085549, 2171098, 4342196, 5427745, 10855490, 21710980]

約数ペア:

[(1, 21710980), (2, 10855490), (4, 5427745), (5, 4342196), (10, 2171098), (20, 1085549), (673, 32260), (1346, 16130), (1613, 13460), (2692, 8065), (3226, 6730), (3365, 6452)]