21060170

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{557}}^1$

素因数の和:782

約数の個数: 32

約数和(自身を含む): 40176000

約数和(自身を除く): 19115830

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 199, 398, 557, 995, 1114, 1990, 2785, 3781, 5570, 7562, 10583, 18905, 21166, 37810, 52915, 105830, 110843, 221686, 554215, 1108430, 2106017, 4212034, 10530085, 21060170]

約数ペア:

[(1, 21060170), (2, 10530085), (5, 4212034), (10, 2106017), (19, 1108430), (38, 554215), (95, 221686), (190, 110843), (199, 105830), (398, 52915), (557, 37810), (995, 21166), (1114, 18905), (1990, 10583), (2785, 7562), (3781, 5570)]