28705280

素因数分解:

$2^9\times 5^1\times {\mathrm{11213}}^1$

素因数の和:11236

約数の個数: 40

約数和(自身を含む): 68831532

約数和(自身を除く): 40126252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 11213, 22426, 44852, 56065, 89704, 112130, 179408, 224260, 358816, 448520, 717632, 897040, 1435264, 1794080, 2870528, 3588160, 5741056, 7176320, 14352640, 28705280]

約数ペア:

[(1, 28705280), (2, 14352640), (4, 7176320), (5, 5741056), (8, 3588160), (10, 2870528), (16, 1794080), (20, 1435264), (32, 897040), (40, 717632), (64, 448520), (80, 358816), (128, 224260), (160, 179408), (256, 112130), (320, 89704), (512, 56065), (640, 44852), (1280, 22426), (2560, 11213)]