8820420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{21001}}^1$

素因数の和:21020

約数の個数: 48

約数和(自身を含む): 28226688

約数和(自身を除く): 19406268

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, 21001, 42002, 63003, 84004, 105005, 126006, 147007, 210010, 252012, 294014, 315015, 420020, 441021, 588028, 630030, 735035, 882042, 1260060, 1470070, 1764084, 2205105, 2940140, 4410210, 8820420]

約数ペア:

[(1, 8820420), (2, 4410210), (3, 2940140), (4, 2205105), (5, 1764084), (6, 1470070), (7, 1260060), (10, 882042), (12, 735035), (14, 630030), (15, 588028), (20, 441021), (21, 420020), (28, 315015), (30, 294014), (35, 252012), (42, 210010), (60, 147007), (70, 126006), (84, 105005), (105, 84004), (140, 63003), (210, 42002), (420, 21001)]