81554578

素因数分解:

$2^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:682

約数の個数: 32

約数和(自身を含む): 142790400

約数和(自身を除く): 61235822

約数列:

[1, 2, 7, 14, 73, 146, 199, 398, 401, 511, 802, 1022, 1393, 2786, 2807, 5614, 14527, 29054, 29273, 58546, 79799, 101689, 159598, 203378, 204911, 409822, 558593, 1117186, 5825327, 11650654, 40777289, 81554578]

約数ペア:

[(1, 81554578), (2, 40777289), (7, 11650654), (14, 5825327), (73, 1117186), (146, 558593), (199, 409822), (398, 204911), (401, 203378), (511, 159598), (802, 101689), (1022, 79799), (1393, 58546), (2786, 29273), (2807, 29054), (5614, 14527)]