665600

素因数分解:

$2^{11}\times 5^2\times {\mathrm{13}}^1$

素因数の和:45

約数の個数: 72

約数和(自身を含む): 1777230

約数和(自身を除く): 1111630

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 256, 260, 320, 325, 400, 416, 512, 520, 640, 650, 800, 832, 1024, 1040, 1280, 1300, 1600, 1664, 2048, 2080, 2560, 2600, 3200, 3328, 4160, 5120, 5200, 6400, 6656, 8320, 10240, 10400, 12800, 13312, 16640, 20800, 25600, 26624, 33280, 41600, 51200, 66560, 83200, 133120, 166400, 332800, 665600]

約数ペア:

[(1, 665600), (2, 332800), (4, 166400), (5, 133120), (8, 83200), (10, 66560), (13, 51200), (16, 41600), (20, 33280), (25, 26624), (26, 25600), (32, 20800), (40, 16640), (50, 13312), (52, 12800), (64, 10400), (65, 10240), (80, 8320), (100, 6656), (104, 6400), (128, 5200), (130, 5120), (160, 4160), (200, 3328), (208, 3200), (256, 2600), (260, 2560), (320, 2080), (325, 2048), (400, 1664), (416, 1600), (512, 1300), (520, 1280), (640, 1040), (650, 1024), (800, 832)]