128788160

素因数分解:

$2^6\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3169}}^1$

素因数の和:3313

約数の個数: 56

約数和(自身を含む): 309189120

約数和(自身を除く): 180400960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 160, 254, 320, 508, 635, 1016, 1270, 2032, 2540, 3169, 4064, 5080, 6338, 8128, 10160, 12676, 15845, 20320, 25352, 31690, 40640, 50704, 63380, 101408, 126760, 202816, 253520, 402463, 507040, 804926, 1014080, 1609852, 2012315, 3219704, 4024630, 6439408, 8049260, 12878816, 16098520, 25757632, 32197040, 64394080, 128788160]

約数ペア:

[(1, 128788160), (2, 64394080), (4, 32197040), (5, 25757632), (8, 16098520), (10, 12878816), (16, 8049260), (20, 6439408), (32, 4024630), (40, 3219704), (64, 2012315), (80, 1609852), (127, 1014080), (160, 804926), (254, 507040), (320, 402463), (508, 253520), (635, 202816), (1016, 126760), (1270, 101408), (2032, 63380), (2540, 50704), (3169, 40640), (4064, 31690), (5080, 25352), (6338, 20320), (8128, 15845), (10160, 12676)]