199025920

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2549}}^1$

素因数の和:2631

約数の個数: 72

約数和(自身を含む): 484734600

約数和(自身を除く): 285708680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 1220, 1280, 1952, 2440, 2549, 3904, 4880, 5098, 7808, 9760, 10196, 12745, 15616, 19520, 20392, 25490, 39040, 40784, 50980, 78080, 81568, 101960, 155489, 163136, 203920, 310978, 326272, 407840, 621956, 652544, 777445, 815680, 1243912, 1554890, 1631360, 2487824, 3109780, 3262720, 4975648, 6219560, 9951296, 12439120, 19902592, 24878240, 39805184, 49756480, 99512960, 199025920]

約数ペア:

[(1, 199025920), (2, 99512960), (4, 49756480), (5, 39805184), (8, 24878240), (10, 19902592), (16, 12439120), (20, 9951296), (32, 6219560), (40, 4975648), (61, 3262720), (64, 3109780), (80, 2487824), (122, 1631360), (128, 1554890), (160, 1243912), (244, 815680), (256, 777445), (305, 652544), (320, 621956), (488, 407840), (610, 326272), (640, 310978), (976, 203920), (1220, 163136), (1280, 155489), (1952, 101960), (2440, 81568), (2549, 78080), (3904, 50980), (4880, 40784), (5098, 39040), (7808, 25490), (9760, 20392), (10196, 19520), (12745, 15616)]