138478705

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 178421760

約数和(自身を除く): 39943055

約数列:

[1, 5, 31, 43, 79, 155, 215, 263, 395, 1315, 1333, 2449, 3397, 6665, 8153, 11309, 12245, 16985, 20777, 40765, 56545, 103885, 105307, 350579, 526535, 644087, 893411, 1752895, 3220435, 4467055, 27695741, 138478705]

約数ペア:

[(1, 138478705), (5, 27695741), (31, 4467055), (43, 3220435), (79, 1752895), (155, 893411), (215, 644087), (263, 526535), (395, 350579), (1315, 105307), (1333, 103885), (2449, 56545), (3397, 40765), (6665, 20777), (8153, 16985), (11309, 12245)]