19965870

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1361}}^1$

素因数の和:1537

約数の個数: 48

約数和(自身を含む): 52268112

約数和(自身を除く): 32302242

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 163, 326, 489, 815, 978, 1361, 1467, 1630, 2445, 2722, 2934, 4083, 4890, 6805, 7335, 8166, 12249, 13610, 14670, 20415, 24498, 40830, 61245, 122490, 221843, 443686, 665529, 1109215, 1331058, 1996587, 2218430, 3327645, 3993174, 6655290, 9982935, 19965870]

約数ペア:

[(1, 19965870), (2, 9982935), (3, 6655290), (5, 3993174), (6, 3327645), (9, 2218430), (10, 1996587), (15, 1331058), (18, 1109215), (30, 665529), (45, 443686), (90, 221843), (163, 122490), (326, 61245), (489, 40830), (815, 24498), (978, 20415), (1361, 14670), (1467, 13610), (1630, 12249), (2445, 8166), (2722, 7335), (2934, 6805), (4083, 4890)]