641520010

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{16763}}^1$

素因数の和:16902

約数の個数: 32

約数和(自身を含む): 1194937920

約数和(自身を除く): 553417910

約数列:

[1, 2, 5, 10, 43, 86, 89, 178, 215, 430, 445, 890, 3827, 7654, 16763, 19135, 33526, 38270, 83815, 167630, 720809, 1441618, 1491907, 2983814, 3604045, 7208090, 7459535, 14919070, 64152001, 128304002, 320760005, 641520010]

約数ペア:

[(1, 641520010), (2, 320760005), (5, 128304002), (10, 64152001), (43, 14919070), (86, 7459535), (89, 7208090), (178, 3604045), (215, 2983814), (430, 1491907), (445, 1441618), (890, 720809), (3827, 167630), (7654, 83815), (16763, 38270), (19135, 33526)]