78868520

素因数分解:

$2^3\times 5^1\times {\mathrm{967}}^1\times {\mathrm{2039}}^1$

素因数の和:3017

約数の個数: 32

約数和(自身を含む): 177724800

約数和(自身を除く): 98856280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 967, 1934, 2039, 3868, 4078, 4835, 7736, 8156, 9670, 10195, 16312, 19340, 20390, 38680, 40780, 81560, 1971713, 3943426, 7886852, 9858565, 15773704, 19717130, 39434260, 78868520]

約数ペア:

[(1, 78868520), (2, 39434260), (4, 19717130), (5, 15773704), (8, 9858565), (10, 7886852), (20, 3943426), (40, 1971713), (967, 81560), (1934, 40780), (2039, 38680), (3868, 20390), (4078, 19340), (4835, 16312), (7736, 10195), (8156, 9670)]