20820086

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2699}}^1$

素因数の和:2756

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 18059914

約数列:

[1, 2, 7, 14, 19, 29, 38, 58, 133, 203, 266, 406, 551, 1102, 2699, 3857, 5398, 7714, 18893, 37786, 51281, 78271, 102562, 156542, 358967, 547897, 717934, 1095794, 1487149, 2974298, 10410043, 20820086]

約数ペア:

[(1, 20820086), (2, 10410043), (7, 2974298), (14, 1487149), (19, 1095794), (29, 717934), (38, 547897), (58, 358967), (133, 156542), (203, 102562), (266, 78271), (406, 51281), (551, 37786), (1102, 18893), (2699, 7714), (3857, 5398)]