138152920

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1$

素因数の和:508

約数の個数: 64

約数和(自身を含む): 317649600

約数和(自身を除く): 179496680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 151, 178, 257, 302, 356, 445, 514, 604, 712, 755, 890, 1028, 1208, 1285, 1510, 1780, 2056, 2570, 3020, 3560, 5140, 6040, 10280, 13439, 22873, 26878, 38807, 45746, 53756, 67195, 77614, 91492, 107512, 114365, 134390, 155228, 182984, 194035, 228730, 268780, 310456, 388070, 457460, 537560, 776140, 914920, 1552280, 3453823, 6907646, 13815292, 17269115, 27630584, 34538230, 69076460, 138152920]

約数ペア:

[(1, 138152920), (2, 69076460), (4, 34538230), (5, 27630584), (8, 17269115), (10, 13815292), (20, 6907646), (40, 3453823), (89, 1552280), (151, 914920), (178, 776140), (257, 537560), (302, 457460), (356, 388070), (445, 310456), (514, 268780), (604, 228730), (712, 194035), (755, 182984), (890, 155228), (1028, 134390), (1208, 114365), (1285, 107512), (1510, 91492), (1780, 77614), (2056, 67195), (2570, 53756), (3020, 45746), (3560, 38807), (5140, 26878), (6040, 22873), (10280, 13439)]