20153776

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 40202784

約数和(自身を除く): 20049008

約数列:

[1, 2, 4, 8, 16, 71, 113, 142, 157, 226, 284, 314, 452, 568, 628, 904, 1136, 1256, 1808, 2512, 8023, 11147, 16046, 17741, 22294, 32092, 35482, 44588, 64184, 70964, 89176, 128368, 141928, 178352, 283856, 1259611, 2519222, 5038444, 10076888, 20153776]

約数ペア:

[(1, 20153776), (2, 10076888), (4, 5038444), (8, 2519222), (16, 1259611), (71, 283856), (113, 178352), (142, 141928), (157, 128368), (226, 89176), (284, 70964), (314, 64184), (452, 44588), (568, 35482), (628, 32092), (904, 22294), (1136, 17741), (1256, 16046), (1808, 11147), (2512, 8023)]