78542920

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{7823}}^1$

素因数の和:8085

約数の個数: 32

約数和(自身を含む): 177448320

約数和(自身を除く): 98905400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 7823, 10040, 15646, 31292, 39115, 62584, 78230, 156460, 312920, 1963573, 3927146, 7854292, 9817865, 15708584, 19635730, 39271460, 78542920]

約数ペア:

[(1, 78542920), (2, 39271460), (4, 19635730), (5, 15708584), (8, 9817865), (10, 7854292), (20, 3927146), (40, 1963573), (251, 312920), (502, 156460), (1004, 78230), (1255, 62584), (2008, 39115), (2510, 31292), (5020, 15646), (7823, 10040)]