19779900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9419}}^1$

素因数の和:9443

約数の個数: 72

約数和(自身を含む): 65412480

約数和(自身を除く): 45632580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9419, 18838, 28257, 37676, 47095, 56514, 65933, 94190, 113028, 131866, 141285, 188380, 197799, 235475, 263732, 282570, 329665, 395598, 470950, 565140, 659330, 706425, 791196, 941900, 988995, 1318660, 1412850, 1648325, 1977990, 2825700, 3296650, 3955980, 4944975, 6593300, 9889950, 19779900]

約数ペア:

[(1, 19779900), (2, 9889950), (3, 6593300), (4, 4944975), (5, 3955980), (6, 3296650), (7, 2825700), (10, 1977990), (12, 1648325), (14, 1412850), (15, 1318660), (20, 988995), (21, 941900), (25, 791196), (28, 706425), (30, 659330), (35, 565140), (42, 470950), (50, 395598), (60, 329665), (70, 282570), (75, 263732), (84, 235475), (100, 197799), (105, 188380), (140, 141285), (150, 131866), (175, 113028), (210, 94190), (300, 65933), (350, 56514), (420, 47095), (525, 37676), (700, 28257), (1050, 18838), (2100, 9419)]