638555398

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{9349}}^1$

素因数の和:9472

約数の個数: 32

約数和(自身を含む): 1074427200

約数和(自身を除く): 435871802

約数列:

[1, 2, 13, 26, 37, 71, 74, 142, 481, 923, 962, 1846, 2627, 5254, 9349, 18698, 34151, 68302, 121537, 243074, 345913, 663779, 691826, 1327558, 4496869, 8629127, 8993738, 17258254, 24559823, 49119646, 319277699, 638555398]

約数ペア:

[(1, 638555398), (2, 319277699), (13, 49119646), (26, 24559823), (37, 17258254), (71, 8993738), (74, 8629127), (142, 4496869), (481, 1327558), (923, 691826), (962, 663779), (1846, 345913), (2627, 243074), (5254, 121537), (9349, 68302), (18698, 34151)]