21537320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76919}}^1$

素因数の和:76937

約数の個数: 32

約数和(自身を含む): 55382400

約数和(自身を除く): 33845080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76919, 153838, 307676, 384595, 538433, 615352, 769190, 1076866, 1538380, 2153732, 2692165, 3076760, 4307464, 5384330, 10768660, 21537320]

約数ペア:

[(1, 21537320), (2, 10768660), (4, 5384330), (5, 4307464), (7, 3076760), (8, 2692165), (10, 2153732), (14, 1538380), (20, 1076866), (28, 769190), (35, 615352), (40, 538433), (56, 384595), (70, 307676), (140, 153838), (280, 76919)]