12920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:47

約数の個数: 32

約数和(自身を含む): 32400

約数和(自身を除く): 19480

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1615, 2584, 3230, 6460, 12920]

約数ペア:

[(1, 12920), (2, 6460), (4, 3230), (5, 2584), (8, 1615), (10, 1292), (17, 760), (19, 680), (20, 646), (34, 380), (38, 340), (40, 323), (68, 190), (76, 170), (85, 152), (95, 136)]