388742780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{691}}^1\times {\mathrm{1223}}^1$

素因数の和:1946

約数の個数: 48

約数和(自身を含む): 853784064

約数和(自身を除く): 465041284

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 691, 1223, 1382, 2446, 2764, 3455, 4892, 6115, 6910, 12230, 13820, 15893, 24460, 28129, 31786, 56258, 63572, 79465, 112516, 140645, 158930, 281290, 317860, 562580, 845093, 1690186, 3380372, 4225465, 8450930, 16901860, 19437139, 38874278, 77748556, 97185695, 194371390, 388742780]

約数ペア:

[(1, 388742780), (2, 194371390), (4, 97185695), (5, 77748556), (10, 38874278), (20, 19437139), (23, 16901860), (46, 8450930), (92, 4225465), (115, 3380372), (230, 1690186), (460, 845093), (691, 562580), (1223, 317860), (1382, 281290), (2446, 158930), (2764, 140645), (3455, 112516), (4892, 79465), (6115, 63572), (6910, 56258), (12230, 31786), (13820, 28129), (15893, 24460)]