21547600

素因数分解:

$2^4\times 5^2\times {\mathrm{103}}^1\times {\mathrm{523}}^1$

素因数の和:644

約数の個数: 60

約数和(自身を含む): 52370656

約数和(自身を除く): 30823056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 103, 200, 206, 400, 412, 515, 523, 824, 1030, 1046, 1648, 2060, 2092, 2575, 2615, 4120, 4184, 5150, 5230, 8240, 8368, 10300, 10460, 13075, 20600, 20920, 26150, 41200, 41840, 52300, 53869, 104600, 107738, 209200, 215476, 269345, 430952, 538690, 861904, 1077380, 1346725, 2154760, 2693450, 4309520, 5386900, 10773800, 21547600]

約数ペア:

[(1, 21547600), (2, 10773800), (4, 5386900), (5, 4309520), (8, 2693450), (10, 2154760), (16, 1346725), (20, 1077380), (25, 861904), (40, 538690), (50, 430952), (80, 269345), (100, 215476), (103, 209200), (200, 107738), (206, 104600), (400, 53869), (412, 52300), (515, 41840), (523, 41200), (824, 26150), (1030, 20920), (1046, 20600), (1648, 13075), (2060, 10460), (2092, 10300), (2575, 8368), (2615, 8240), (4120, 5230), (4184, 5150)]