21042658

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:311

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 19176542

約数列:

[1, 2, 7, 13, 14, 26, 49, 83, 91, 98, 166, 182, 199, 398, 581, 637, 1079, 1162, 1274, 1393, 2158, 2587, 2786, 4067, 5174, 7553, 8134, 9751, 15106, 16517, 18109, 19502, 33034, 36218, 52871, 105742, 115619, 126763, 214721, 231238, 253526, 429442, 809333, 1503047, 1618666, 3006094, 10521329, 21042658]

約数ペア:

[(1, 21042658), (2, 10521329), (7, 3006094), (13, 1618666), (14, 1503047), (26, 809333), (49, 429442), (83, 253526), (91, 231238), (98, 214721), (166, 126763), (182, 115619), (199, 105742), (398, 52871), (581, 36218), (637, 33034), (1079, 19502), (1162, 18109), (1274, 16517), (1393, 15106), (2158, 9751), (2587, 8134), (2786, 7553), (4067, 5174)]