389964778

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 725760000

約数和(自身を除く): 335795222

約数列:

[1, 2, 7, 14, 19, 38, 53, 106, 133, 139, 199, 266, 278, 371, 398, 742, 973, 1007, 1393, 1946, 2014, 2641, 2786, 3781, 5282, 7049, 7367, 7562, 10547, 14098, 14734, 18487, 21094, 26467, 27661, 36974, 51569, 52934, 55322, 73829, 103138, 139973, 147658, 193627, 200393, 279946, 387254, 400786, 525559, 979811, 1051118, 1402751, 1466033, 1959622, 2805502, 2932066, 3678913, 7357826, 10262231, 20524462, 27854627, 55709254, 194982389, 389964778]

約数ペア:

[(1, 389964778), (2, 194982389), (7, 55709254), (14, 27854627), (19, 20524462), (38, 10262231), (53, 7357826), (106, 3678913), (133, 2932066), (139, 2805502), (199, 1959622), (266, 1466033), (278, 1402751), (371, 1051118), (398, 979811), (742, 525559), (973, 400786), (1007, 387254), (1393, 279946), (1946, 200393), (2014, 193627), (2641, 147658), (2786, 139973), (3781, 103138), (5282, 73829), (7049, 55322), (7367, 52934), (7562, 51569), (10547, 36974), (14098, 27661), (14734, 26467), (18487, 21094)]