64525840

素因数分解:

$2^4\times 5^1\times {\mathrm{809}}^1\times {\mathrm{997}}^1$

素因数の和:1819

約数の個数: 40

約数和(自身を含む): 150358680

約数和(自身を除く): 85832840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 809, 997, 1618, 1994, 3236, 3988, 4045, 4985, 6472, 7976, 8090, 9970, 12944, 15952, 16180, 19940, 32360, 39880, 64720, 79760, 806573, 1613146, 3226292, 4032865, 6452584, 8065730, 12905168, 16131460, 32262920, 64525840]

約数ペア:

[(1, 64525840), (2, 32262920), (4, 16131460), (5, 12905168), (8, 8065730), (10, 6452584), (16, 4032865), (20, 3226292), (40, 1613146), (80, 806573), (809, 79760), (997, 64720), (1618, 39880), (1994, 32360), (3236, 19940), (3988, 16180), (4045, 15952), (4985, 12944), (6472, 9970), (7976, 8090)]