20799660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49523}}^1$

素因数の和:49542

約数の個数: 48

約数和(自身を含む): 66560256

約数和(自身を除く): 45760596

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49523, 99046, 148569, 198092, 247615, 297138, 346661, 495230, 594276, 693322, 742845, 990460, 1039983, 1386644, 1485690, 1733305, 2079966, 2971380, 3466610, 4159932, 5199915, 6933220, 10399830, 20799660]

約数ペア:

[(1, 20799660), (2, 10399830), (3, 6933220), (4, 5199915), (5, 4159932), (6, 3466610), (7, 2971380), (10, 2079966), (12, 1733305), (14, 1485690), (15, 1386644), (20, 1039983), (21, 990460), (28, 742845), (30, 693322), (35, 594276), (42, 495230), (60, 346661), (70, 297138), (84, 247615), (105, 198092), (140, 148569), (210, 99046), (420, 49523)]