21150920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75539}}^1$

素因数の和:75557

約数の個数: 32

約数和(自身を含む): 54388800

約数和(自身を除く): 33237880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75539, 151078, 302156, 377695, 528773, 604312, 755390, 1057546, 1510780, 2115092, 2643865, 3021560, 4230184, 5287730, 10575460, 21150920]

約数ペア:

[(1, 21150920), (2, 10575460), (4, 5287730), (5, 4230184), (7, 3021560), (8, 2643865), (10, 2115092), (14, 1510780), (20, 1057546), (28, 755390), (35, 604312), (40, 528773), (56, 377695), (70, 302156), (140, 151078), (280, 75539)]