255211720

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{76871}}^1$

素因数の和:76965

約数の個数: 32

約数和(自身を含む): 581152320

約数和(自身を除く): 325940600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 76871, 153742, 307484, 384355, 614968, 768710, 1537420, 3074840, 6380293, 12760586, 25521172, 31901465, 51042344, 63802930, 127605860, 255211720]

約数ペア:

[(1, 255211720), (2, 127605860), (4, 63802930), (5, 51042344), (8, 31901465), (10, 25521172), (20, 12760586), (40, 6380293), (83, 3074840), (166, 1537420), (332, 768710), (415, 614968), (664, 384355), (830, 307484), (1660, 153742), (3320, 76871)]