28801280

素因数分解:

$2^8\times 5^1\times {\mathrm{22501}}^1$

素因数の和:22522

約数の個数: 36

約数和(自身を含む): 68991132

約数和(自身を除く): 40189852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 22501, 45002, 90004, 112505, 180008, 225010, 360016, 450020, 720032, 900040, 1440064, 1800080, 2880128, 3600160, 5760256, 7200320, 14400640, 28801280]

約数ペア:

[(1, 28801280), (2, 14400640), (4, 7200320), (5, 5760256), (8, 3600160), (10, 2880128), (16, 1800080), (20, 1440064), (32, 900040), (40, 720032), (64, 450020), (80, 360016), (128, 225010), (160, 180008), (256, 112505), (320, 90004), (640, 45002), (1280, 22501)]