81729760

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72973}}^1$

素因数の和:72995

約数の個数: 48

約数和(自身を含む): 220673376

約数和(自身を除く): 138943616

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72973, 145946, 291892, 364865, 510811, 583784, 729730, 1021622, 1167568, 1459460, 2043244, 2335136, 2554055, 2918920, 4086488, 5108110, 5837840, 8172976, 10216220, 11675680, 16345952, 20432440, 40864880, 81729760]

約数ペア:

[(1, 81729760), (2, 40864880), (4, 20432440), (5, 16345952), (7, 11675680), (8, 10216220), (10, 8172976), (14, 5837840), (16, 5108110), (20, 4086488), (28, 2918920), (32, 2554055), (35, 2335136), (40, 2043244), (56, 1459460), (70, 1167568), (80, 1021622), (112, 729730), (140, 583784), (160, 510811), (224, 364865), (280, 291892), (560, 145946), (1120, 72973)]