640923038

素因数分解:

$2^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{191}}^1\times {\mathrm{353}}^1$

素因数の和:657

約数の個数: 48

約数和(自身を含む): 1139007744

約数和(自身を除く): 498084706

約数列:

[1, 2, 7, 14, 49, 97, 98, 191, 194, 353, 382, 679, 706, 1337, 1358, 2471, 2674, 4753, 4942, 9359, 9506, 17297, 18527, 18718, 34241, 34594, 37054, 67423, 68482, 129689, 134846, 239687, 259378, 471961, 479374, 907823, 943922, 1677809, 1815646, 3303727, 3355618, 6540031, 6607454, 13080062, 45780217, 91560434, 320461519, 640923038]

約数ペア:

[(1, 640923038), (2, 320461519), (7, 91560434), (14, 45780217), (49, 13080062), (97, 6607454), (98, 6540031), (191, 3355618), (194, 3303727), (353, 1815646), (382, 1677809), (679, 943922), (706, 907823), (1337, 479374), (1358, 471961), (2471, 259378), (2674, 239687), (4753, 134846), (4942, 129689), (9359, 68482), (9506, 67423), (17297, 37054), (18527, 34594), (18718, 34241)]