81235840

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{18133}}^1$

素因数の和:18159

約数の個数: 64

約数和(自身を含む): 221960160

約数和(自身を除く): 140724320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 18133, 36266, 72532, 90665, 126931, 145064, 181330, 253862, 290128, 362660, 507724, 580256, 634655, 725320, 1015448, 1160512, 1269310, 1450640, 2030896, 2321024, 2538620, 2901280, 4061792, 5077240, 5802560, 8123584, 10154480, 11605120, 16247168, 20308960, 40617920, 81235840]

約数ペア:

[(1, 81235840), (2, 40617920), (4, 20308960), (5, 16247168), (7, 11605120), (8, 10154480), (10, 8123584), (14, 5802560), (16, 5077240), (20, 4061792), (28, 2901280), (32, 2538620), (35, 2321024), (40, 2030896), (56, 1450640), (64, 1269310), (70, 1160512), (80, 1015448), (112, 725320), (128, 634655), (140, 580256), (160, 507724), (224, 362660), (280, 290128), (320, 253862), (448, 181330), (560, 145064), (640, 126931), (896, 90665), (1120, 72532), (2240, 36266), (4480, 18133)]