128740640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{16421}}^1$

素因数の和:16450

約数の個数: 72

約数和(自身を含む): 353828412

約数和(自身を除く): 225087772

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 16421, 32842, 65684, 82105, 114947, 131368, 164210, 229894, 262736, 328420, 459788, 525472, 574735, 656840, 804629, 919576, 1149470, 1313680, 1609258, 1839152, 2298940, 2627360, 3218516, 3678304, 4023145, 4597880, 6437032, 8046290, 9195760, 12874064, 16092580, 18391520, 25748128, 32185160, 64370320, 128740640]

約数ペア:

[(1, 128740640), (2, 64370320), (4, 32185160), (5, 25748128), (7, 18391520), (8, 16092580), (10, 12874064), (14, 9195760), (16, 8046290), (20, 6437032), (28, 4597880), (32, 4023145), (35, 3678304), (40, 3218516), (49, 2627360), (56, 2298940), (70, 1839152), (80, 1609258), (98, 1313680), (112, 1149470), (140, 919576), (160, 804629), (196, 656840), (224, 574735), (245, 525472), (280, 459788), (392, 328420), (490, 262736), (560, 229894), (784, 164210), (980, 131368), (1120, 114947), (1568, 82105), (1960, 65684), (3920, 32842), (7840, 16421)]