155186440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{63601}}^1$

素因数の和:63673

約数の個数: 32

約数和(自身を含む): 354899160

約数和(自身を除く): 199712720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 63601, 127202, 254404, 318005, 508808, 636010, 1272020, 2544040, 3879661, 7759322, 15518644, 19398305, 31037288, 38796610, 77593220, 155186440]

約数ペア:

[(1, 155186440), (2, 77593220), (4, 38796610), (5, 31037288), (8, 19398305), (10, 15518644), (20, 7759322), (40, 3879661), (61, 2544040), (122, 1272020), (244, 636010), (305, 508808), (488, 318005), (610, 254404), (1220, 127202), (2440, 63601)]