21286170

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1451}}^1$

素因数の和:1627

約数の個数: 48

約数和(自身を含む): 55721952

約数和(自身を除く): 34435782

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 163, 326, 489, 815, 978, 1451, 1467, 1630, 2445, 2902, 2934, 4353, 4890, 7255, 7335, 8706, 13059, 14510, 14670, 21765, 26118, 43530, 65295, 130590, 236513, 473026, 709539, 1182565, 1419078, 2128617, 2365130, 3547695, 4257234, 7095390, 10643085, 21286170]

約数ペア:

[(1, 21286170), (2, 10643085), (3, 7095390), (5, 4257234), (6, 3547695), (9, 2365130), (10, 2128617), (15, 1419078), (18, 1182565), (30, 709539), (45, 473026), (90, 236513), (163, 130590), (326, 65295), (489, 43530), (815, 26118), (978, 21765), (1451, 14670), (1467, 14510), (1630, 13059), (2445, 8706), (2902, 7335), (2934, 7255), (4353, 4890)]