20199900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9619}}^1$

素因数の和:9643

約数の個数: 72

約数和(自身を含む): 66801280

約数和(自身を除く): 46601380

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, 9619, 19238, 28857, 38476, 48095, 57714, 67333, 96190, 115428, 134666, 144285, 192380, 201999, 240475, 269332, 288570, 336665, 403998, 480950, 577140, 673330, 721425, 807996, 961900, 1009995, 1346660, 1442850, 1683325, 2019990, 2885700, 3366650, 4039980, 5049975, 6733300, 10099950, 20199900]

約数ペア:

[(1, 20199900), (2, 10099950), (3, 6733300), (4, 5049975), (5, 4039980), (6, 3366650), (7, 2885700), (10, 2019990), (12, 1683325), (14, 1442850), (15, 1346660), (20, 1009995), (21, 961900), (25, 807996), (28, 721425), (30, 673330), (35, 577140), (42, 480950), (50, 403998), (60, 336665), (70, 288570), (75, 269332), (84, 240475), (100, 201999), (105, 192380), (140, 144285), (150, 134666), (175, 115428), (210, 96190), (300, 67333), (350, 57714), (420, 48095), (525, 38476), (700, 28857), (1050, 19238), (2100, 9619)]