40802560

素因数分解:

$2^8\times 5^1\times {\mathrm{127}}^1\times {\mathrm{251}}^1$

素因数の和:399

約数の個数: 72

約数和(自身を含む): 98896896

約数和(自身を除く): 58094336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 251, 254, 256, 320, 502, 508, 635, 640, 1004, 1016, 1255, 1270, 1280, 2008, 2032, 2510, 2540, 4016, 4064, 5020, 5080, 8032, 8128, 10040, 10160, 16064, 16256, 20080, 20320, 31877, 32128, 32512, 40160, 40640, 63754, 64256, 80320, 81280, 127508, 159385, 160640, 162560, 255016, 318770, 321280, 510032, 637540, 1020064, 1275080, 2040128, 2550160, 4080256, 5100320, 8160512, 10200640, 20401280, 40802560]

約数ペア:

[(1, 40802560), (2, 20401280), (4, 10200640), (5, 8160512), (8, 5100320), (10, 4080256), (16, 2550160), (20, 2040128), (32, 1275080), (40, 1020064), (64, 637540), (80, 510032), (127, 321280), (128, 318770), (160, 255016), (251, 162560), (254, 160640), (256, 159385), (320, 127508), (502, 81280), (508, 80320), (635, 64256), (640, 63754), (1004, 40640), (1016, 40160), (1255, 32512), (1270, 32128), (1280, 31877), (2008, 20320), (2032, 20080), (2510, 16256), (2540, 16064), (4016, 10160), (4064, 10040), (5020, 8128), (5080, 8032)]